KZitem recently changed the way my content will be monetised. My channel now needs 1,000 subscribers. So it would be amazing if you show your support by both watching my videos and subscribing to my channel if you haven’t done so already. Monetising my videos allows me to invest back into the channel with some new equipment so this small gesture from you will be extremely huge for me. Many thanks for your support….CrunchEconometrix loves to teach, support my Channel with your subscription and sharing my videos with your cohorts.
@nikolaizaicev9297
2 ай бұрын
The only person who included all the required steps, my god, I am so thankfull for that. I watched already 100+ of videos from some s....t heads, that are d...b enough to not even explain what are the prerequisites and why is someone doing specific tests, etc.
@CrunchEconometrix
2 ай бұрын
Thanks, Nikolai for your encouraging feedback... deeply appreciated! 🙏
@nikolaizaicev9297
2 ай бұрын
@@CrunchEconometrix I have a question, in your videos, you have not showed how to test for serial correlation, etc. Are those tests not required in case of Panel ARLD? I can not find any information on that. Everyone is using xtserial, but I am unsure wheather that can or should be applied to Panel ARLD with PMG? Could you maybe give some advice on that? I would highly appreciate that, and I think that would an important topic for a video too.
@kelebobn
Жыл бұрын
Thank you so much Prof. I managed to estimate my panel ardl model following all your videos. My thesis is due in the morning. You are the best econometrics teacher on KZitem so far.
@CrunchEconometrix
Жыл бұрын
Glad to hear, Keleb 🙌. Well done! 🍾🥂
@dennisbaidoo5995
3 жыл бұрын
Well explained. Thank you Prof.
@CrunchEconometrix
3 жыл бұрын
Glad it was helpful, Dennis!
@alizarma1098
2 жыл бұрын
Merci Docteur !!! Please we need tutoriels to estimate panel Var bye GMM system
@CrunchEconometrix
2 жыл бұрын
Hi Ali, videos on panel VAR-GMM are available on my Teachable paid platform cruncheconometrix.teachable.com. Enrollment fee of $200 allows you access to all videos published in the School. Thanks
@kevinwanjala4223
5 жыл бұрын
Thank you very much. you have really come in handy in the completion of my Thesis
@CrunchEconometrix
5 жыл бұрын
You made my day wth this positive feedback, Kevin...congratulations! May I know from where you are reaching me?
@kevinwanjala4223
5 жыл бұрын
I am from Kenya. An Postgraduate economic student in Egerton university. The PMG code worked really well
@CrunchEconometrix
5 жыл бұрын
@@kevinwanjala4223 Awesome!!! Kindly spread the word about my videos and YT Channel to your students, friends, and colleagues in Kenya...they will learn some useful skills and tips too!
@abdelhadibenghalem1332
2 жыл бұрын
Thank you for the good content, however I just have one inquiry regarding the unit root test, that is how de we select the number of lags in this test, from where did you come up with lags(1) for all variables. why it is not lags(0) or lags (2). Thanks in advance knowing that I support you for the amazing work you are producing.
@CrunchEconometrix
2 жыл бұрын
Hi Abdelhadi, I chose the lag arbitrarily...and yes, you can run the test with 0 lag or 2 as you desire.
@mohamadkhayyat3678
3 жыл бұрын
Hi dear professor, I would be grateful, if you share a video or step-by-step manual to estimate ridge regression approach in STATA. Thanks
@CrunchEconometrix
3 жыл бұрын
Hi Mohamad, thanks for the suggestion but I have no idea about that technique at the moment. Thanks 😊
@joselopes4588
4 жыл бұрын
Dear Dr. Ngozi, Thank you for the videos. I have two questions for you: 1. How can I reference the ARDL model you presented here in a paper? 2. In the model, ∂ stands for what? 3. Why ∅ is expected to be must be less than 0. Thank you in advance. José Lopes
@CrunchEconometrix
4 жыл бұрын
Hi Jose, I ALWAYS do my best to give detailed explanations on the models specified. So, you many need to watch the clip again. Also, there are references listed at the end of the video and my ARDL papers are available for FREE downloads on my website for detailed understanding of the ARDL model cruncheconomerix.com.ng/shop. Regards,
@joselopes4588
4 жыл бұрын
Dr. Ngozy, I thank you very much for your promptly reply. I deeply appreciate it. I am adapting the ARDL specification model you used in your videos. What citation you recommend.
@CrunchEconometrix
4 жыл бұрын
Citation? I don't understand what you mean.
@joselopes4588
4 жыл бұрын
Hi again Dr. Ngozi, I am sorry. I think I did not express myself correctly. What I want to say is that I am writing a paper and I am using ARDL model. I adapted the model you presented in your videos and I need to reference it in my paper. Is it published in a particular paper or I should only make reference to the video itself. I hoped I explained myself sucessfully. I apologize. Thank you
@CrunchEconometrix
4 жыл бұрын
@@joselopes4588 No problem, I just need clarity on the query. Kindly cite these my ARDL papers (most of my videos are based on methods I have used): (1) Adeleye, B. N. (2020). “Unbundling Interest Rate and Bank Credit Nexus on Income Inequality: Structural Break Analysis from Nigeria”. Journal of Financial Regulation and Compliance, DOI 10.1108/JFRC-04-2020-0035 dx.doi.org/10.1108/JFRC-04-2020-0035 (2) Adeleye, N., Osabuohien, E., and Asongu, S. (2020). “Agro-Industrialisation and Financial Intermediation in Nigeria”. African Journal of Economic and Management Studies, DOI 10.1108/AJEMS-02-2019-0078 dx.doi.org/10.1108/AJEMS-02-2019-0078 (3) Adeleye, N., Osabuohien, E., Bowale, E., Matthew, O., and Oduntan, E. (2018) “Financial reforms and credit growth in Nigeria: Empirical insights from ARDL and ECM techniques”, International Review of Applied Economics, 32(6), 807-820, DOI:10.1080/02692171.2017.1375466 dx.doi.org/10.1080/02692171.2017.1375466 ...thanks!
@dennisbaidoo5995
3 жыл бұрын
Thank you very much Prof. Please, without using panel ardl due to the presence of l(2) variables in a model, what estimator is best suited for a variable combination of l(0), l(1) and l(2) in panel data analysis. Thank you.
@CrunchEconometrix
3 жыл бұрын
Hi Dennis, I have no idea at the moment. You may want to check out other online resources. Thanks.
@a.dzulfahmiimran7888
11 ай бұрын
Is there a video that shows how to arrange the data in Microsoft Excel before we step to open the STATA application, I am confused when you explain how to separate CFA and NCFA Countries. There must be a specific format for data arrangement before running the STATA.
@CrunchEconometrix
11 ай бұрын
Kindly watch my video on "Building a Panel Data."
@ariefshamsul_
8 ай бұрын
Hi there, I was just wondering on.. 1. Why do you use lag of 1 when running the unit root test? 2. May I know the difference between the IPS and LLC in a more detailed version?
@CrunchEconometrix
8 ай бұрын
Hi Arief: (1) to control for serial correlation; (2) related articles on both tests will provide you with detailed information.
@ariefshamsul_
8 ай бұрын
@@CrunchEconometrix Thank you. But may I know what will happen if you use a lag of 2 or maybe 3 when running the unit root test. Will it be a problem?
@CrunchEconometrix
7 ай бұрын
Ariel, using more lags strengthens the power of the test BUT you lose more observations by doing so.
@nikolaizaicev9297
2 ай бұрын
@@ariefshamsul_ A bit late, but maybe that helps you still. The lags are for testin stationarity at differences. 0 lags would mean, testing stationarity at level of the variable as it is at the moment. Once you include lags(1), you are testing stationarity of that variable at its first difference, not at level! This is important, if you want to use Panel ARDL, you confirm in that way that at least at the 1st difference, your variables are stationary and you can use it.
@eddiemahembephd7026
6 жыл бұрын
Thank you Dr Ngozi for the videos and very simple and easy to follow teaching. I’m trying to run a panel ARDL with N= 84 and T=12. He are my main questions: 1. Is ARDL model applicable in this sample? 2. When I tried to run an IPS Unit Root test for one of my variables (Polity IV), Stata keeps on saying that there are not enough time periods. However, other variables are not any issue. What could be the problem with my democracy indicator and/or how can I overcome the challenge?
@CrunchEconometrix
5 жыл бұрын
Hi Eddie, if had watch the 1st video, as advised, on "Basics of panel ARDL", you'd realise that panel ARDL is not applicable. May I know from where (location) you are reaching me?
@oumaimabenaljia8127
4 ай бұрын
Hi professor, I have 25 countries and 7 variables , I used this command forval i= 1/25 { . 2. ardl FEIR GII PSCH WBLI GDP ATM GINIIndex if( Countrycode == `i'), maxlag(1 1 1 1 1 1 1) aic matrix list e(lags) . 3. di . 4. } I got this error message : 2. is not a valid command name
@CrunchEconometrix
4 ай бұрын
Panel ARDL works best with few countries and few variables.
@jokosusilo9009
Жыл бұрын
Great explanation, ma'am professor, but I want to ask something That's the meaning of the ARDL model below of the notation for the sigma p and q? There is j=1 and j=0? Does j represent a unit or group sample from a cross-section or something else?
@CrunchEconometrix
Жыл бұрын
Hi Joko, j=0, j=1 represent the time specifications.
@alicehuong8715
3 жыл бұрын
May I know what is the difference between; 1st: xtunitroot ips x 2nd: xtunitroot ips x, lags(1)? When should I use the second option? Thanks.
@CrunchEconometrix
3 жыл бұрын
Hi Alice, can use either. You can also search online about the underlying assumptions of the test.
@reinagiovanni
5 ай бұрын
What if one of my explanatory variables has a correlation statistic of 0.7955 may i still include this in the model?
@CrunchEconometrix
4 ай бұрын
That's a high correlation. You may want to drop the variable.
@aburahif1402
3 жыл бұрын
In code CFA the ccy== mentioned. this is for what it’s?
@CrunchEconometrix
3 жыл бұрын
Shaws, ccy is the country classification.
@soosuklee98
2 жыл бұрын
Hello Professor, thank you for your help in this video. I have a question regarding the panel unit root test. I used cross-section Im Pesaran Shin test, which accounts for cross-sectional dependence, for my variables. One variable, which was population, still contained unit roots even for the first difference values. The second difference value did show to be stationary. So I was wondering if I am still able to incorporate this variable in the panel ARDL model? If not should I discard this variable or take other actions? Thank you again for your help!
@CrunchEconometrix
2 жыл бұрын
Soo, I will drop that variable and replace with closer proxy that is stationary either at level or 1st difference.
@soosuklee98
2 жыл бұрын
@@CrunchEconometrix Hello again Professor, thank you for your help. I tried the 5. Optimal Lag Selection (In your next video) and it said that collinearity was detected for the lag variable of population. I am not sure why this is the case as it seemed that there is no high correlation over 0.8 with other independent variables when calculating the Correlation Matrix. Nonetheless, I have dropped this variable accordingly. Thank you again for your help!
@CrunchEconometrix
2 жыл бұрын
Hi Soo, collinearity occurs with the lags used in the underlying algorithm. You will see that from the Stata error messages indicated at the top of the results output.
@soosuklee98
2 жыл бұрын
@@CrunchEconometrix Hello Professor, thank you for your help, may I ask one more question? So if collinearity occurs with the lag variable, is my best option to drop these variables from the model as well? Thank you again!
@CrunchEconometrix
2 жыл бұрын
Drop it from the model and use a closer proxy, if necessary.
@dennisbaidoo5995
3 жыл бұрын
Thanks so much Prof. Please, is this procedure applicable to unbalanced data?
@CrunchEconometrix
3 жыл бұрын
Yes, absolutely on the condition that there are no TOO many missing observations.
@mohamadkhayyat3678
3 жыл бұрын
Hi Dear Crunch There is Multicollinearity problem in step3 between variables for my panel data. I want to estimate Trans-log production function. Dependent variable is output and independent variables are labor, energy, and capital (in LN form). Panel data is available for 20 years and 23 sections ( (N=20, i=23). what is your suggestion? use other approaches such as Ridge regression? Thanks
@CrunchEconometrix
3 жыл бұрын
Mohammad, N is TOO large. Reduce to less than 10....and increase T to > 30 years.
@parfaitberi3974
3 жыл бұрын
Please, why did you use lag (1)?
@CrunchEconometrix
3 жыл бұрын
Hi Bari, one lag used to avoid losing too many degrees of freedom.
@baburebaburu743
3 жыл бұрын
what did you mean when you use this comand sum x1 x2 x3 if ccy== "cfa" my question is what is ccy and cfa?
@CrunchEconometrix
3 жыл бұрын
Hi Babure. ccy is the country classification id; CFA is for countries classified as such.
@ghadaommezzine3065
5 жыл бұрын
Hi, how can i applied the test of second generation on stata or eviews ? (Bai and Ng (2001) , Moon and Perron (2004),Phillips and Sul (2003) Pesaran (2003),Choi (2002) ).
@CrunchEconometrix
5 жыл бұрын
Hi Ghada, you may need to consult other online resources on these procedures since I do not any videos at the moment. Thanks.
@aburahif1402
3 жыл бұрын
May I have to ask what does mean ccy in 4:32 mins.?
@CrunchEconometrix
3 жыл бұрын
That's the country classification.
@sabashah1160
3 жыл бұрын
When command for ist difference it appears on screen “ factor variables and time series operators not allowed “ please tell by where lies the fault
@CrunchEconometrix
3 жыл бұрын
Hi Saba, no idea what this means. Click on the Stata error code on guide to correct the problem. Thanks.
@meidywinengko842
2 жыл бұрын
Hi I think I couldn't access the website link you put in the description box. Is there anyway I can get the do file? Thank you
@CrunchEconometrix
2 жыл бұрын
Hi Meidy, I deactivated the link due to unethical conduct and several attempts to hack into my Google Drive. All Stata dofiles and some datasets used in my videos are now available on my website upon payment. Here's the link cruncheconometrix.com.ng/shop
@TheHoney2honey
3 жыл бұрын
when ever, I tried unit root command I got an error "Im-Pesaran-Shin test cannot have gaps in data". My data is strongly balance. Can you guide how to remove these gaps?
@CrunchEconometrix
3 жыл бұрын
I get the same error message too.
@omalams9350
4 жыл бұрын
Thanks a lot , i'm also working on CFA and NCFA countries hahahaha
@CrunchEconometrix
4 жыл бұрын
U're welcome, Omalams. Please may I know from where (location) you are reaching me?
@omalams9350
4 жыл бұрын
@@CrunchEconometrix From China, South Western University of finance and economics. By the way how to get the ECM in a panel data every time i'm trying your command it is requiring me to use a time series data, but my research is a panel of 32 countries
@ballotc
Жыл бұрын
Tk you
@CrunchEconometrix
Жыл бұрын
U're welcome, Sir 🥰
@veenushankar8999
2 жыл бұрын
How to set forval before running ARDL command on stata
@CrunchEconometrix
2 жыл бұрын
Hi Veenu, kindly post this on Statalist.org on how to do this.
@Dr_Shiny
4 жыл бұрын
Dear Professor, how did you create "ccy" for two different groups of countries CFA and NCFA. Did you convert your data to different subsamples or you just arrange them in one column? How did you perform the "Sum" command for CFA and NCFA? I have 16 banks, and they have three different groups A, B, C, according to their size. How can i create their groups or this "CCY"
@CrunchEconometrix
4 жыл бұрын
I categorized them in a column. I told you to watch TIPS TO BUILDING PANEL DATA.
@edgarndani5238
6 жыл бұрын
I believe you are doing fine. At the moment I am doing dissertation but I am struggling to make a final decision on my model due to type of data I have. The data is panel but the number of time periods is larger than the number of observations/ companies (T>N). so I came to find out 2 most talk about model one is Time Series Cross Sectional and Another is Heterogenous Panel ARDL model. I am abit confused and all these models seems legit to be used. What is your Take? Regards Edgar Ndani
@CrunchEconometrix
6 жыл бұрын
Edgar Ndani Hi Edgar, there is no direct answer to your query because many factors inform a methodology. Such as your research question and type of data. So, my answer will be that you study the assumptions of the approaches you have stated and see which best can address your research question and fits your data structure. More importantly, discuss with your Supervisor to harness more comments on the best approach to adopt. Hope these tips are helpful.
@kateokoya373
2 жыл бұрын
Hello Prof, thank you for sharing the video God bless you more. I have a problem, I installed the pmg command in stata ( ssc install xtpmg, replace pmg), but when i try to start the pmg estimation, i get an error message (numerical derivatives are approximate, flat or discontinuous region encountered). Please, what does this mean? and what can i do?
@CrunchEconometrix
2 жыл бұрын
Hi Kate, thanks for the encouraging feedback on my video. Deeply appreciated. That occurs when there's multicollinearity of the regressors. You may need to drop some and use at most 4.
@CrunchEconometrix
2 жыл бұрын
3 depvars and 1 indepvar? What sort of model is that?
@kateokoya373
2 жыл бұрын
3 models
@lesleyaidoo
2 жыл бұрын
is there a tutorial on ARDL panel done with Eview
@CrunchEconometrix
2 жыл бұрын
No Lesley. You may want to check out other online resources.
@jamellafraser7135
4 жыл бұрын
Hi, I'm a master student currently working on my thesis using the program Stata to analyse my data. I have been looking at your videos and they are very helpful. I've been receiving the error: repeated time values in sample r(451); I have checked for duplication, dropped observations but still receiving the error message
@CrunchEconometrix
4 жыл бұрын
Hi Jamella, painstakingly look thru your data for double imputation of the time series and remove. This has happened to me. The error is there.
@jamellafraser7135
4 жыл бұрын
@@CrunchEconometrix I checked for duplications and there's none so I'm not sure
@CrunchEconometrix
4 жыл бұрын
@@jamellafraser7135 Ok. To harvest more constructive suggestions post it on Statalist.org.
@masaudyahaya7821
3 жыл бұрын
Prof, I need theoretical proof for estimating a dynamic panel that have small N and large T with PMG please
@CrunchEconometrix
3 жыл бұрын
Hi Masaud, please read the "Pesaran" papers listed at the end of the panel ARDL videos. Thanks.
@CrunchEconometrix
3 жыл бұрын
Hi Masaud, please read the "Pesaran" papers listed at the end of the panel ARDL videos. Thanks.
@CrunchEconometrix
3 жыл бұрын
Hi Masaud, please read the "Pesaran" papers listed at the end of the panel ARDL videos. Thanks.
@nadahusseinshokry5886
5 жыл бұрын
Thank you for such informative and useful videos. I have a very large panel dataset with monthly observations for values of a large number of firms. So I have a variable called yearmo: eg. (2005m1) and year: 2005 and month: 1 for each firm. So, my time values are repeated for each firm. When I try to do the xtset value yearmo, it says time values are repeated and cancels the command. How can I go about this?
@CrunchEconometrix
5 жыл бұрын
I rarely do this. Send your data to cruncheconometrix@gmail.com and I'll guide you appropriately.
@nadahusseinshokry5886
5 жыл бұрын
@@CrunchEconometrix thank you so much for your offer, I have already solved the problem. But now I have another problem. My data is severely unbalanced so that when doing the unitroot fisher test which is the only one appropriate for such a problem, a lot of panel are not computed in the test and I.m sure the results are biased. Do you know how to go about unbalanced data?
@CrunchEconometrix
5 жыл бұрын
@@nadahusseinshokry5886 Not at all...
@rinawelly5221
6 жыл бұрын
mrs bozede...can I analysis betwen social variable an economic like democration index and growth, and how much data do we need to run panel ardl....thank you for advise
@CrunchEconometrix
6 жыл бұрын
Yes you can Andres, but make sure that you have sufficient time series data of not less than 30years for each group in the panel....make sure you watch the listed prerequisite videos, read the references listed at the end of the video and subscribe to my YTC if you've not done so!
@debosmitachatterjee9994
4 жыл бұрын
Thank you so much for the video. It was immensely helpful.. I just have a question: Can we use ARDL if some variables of the model are stationary at level form while others are stationary at first-difference? Thank you in advance.
@CrunchEconometrix
4 жыл бұрын
Yes, Debosmita that's one of the core strengths of the ARDL model. See references at the end of the video (and my papers on the Community Tab) for better understanding. Thanks. Please may I know from where (location) you are reaching me?
@debosmitachatterjee9994
4 жыл бұрын
@@CrunchEconometrix Thank you so much for the reply... I am from India. And also, thank you for the videos as an undergraduate student I benefited immensely from those.
@piyalikumar3497
5 жыл бұрын
Respected mam, many thanks for your videos and explanation. I am pleased with your guidance. I have followed your all videos on Panel ARDL. I have a question that is it necessary to run more than one unit root test for panel ARDL? My data is balanced panel data. I am eagerly waiting for your response. Thank you mam.
@CrunchEconometrix
5 жыл бұрын
I'll say yes to compare the results which makes your analysis more robust.
@piyalikumar3497
5 жыл бұрын
ok. thank you mam.
@CrunchEconometrix
5 жыл бұрын
@@piyalikumar3497 My humble pleasure...kindly share my KZitem Channel link with your students, friends and academic community on social media for awareness. They'll learn some useful tips and skills too 😊
@piyalikumar3497
5 жыл бұрын
CrunchEconometrix yeah sure. 😊
@attilashaaran4799
5 жыл бұрын
Thank you very much for the video. Very helpful! I was wondering why we do not run a hetroskedasticity test for panel data? And we have to run one, what is the command for it? Thanks
@CrunchEconometrix
5 жыл бұрын
Hi Attila, scan thru the empirical literature to see what obtains. Thanks
@attilashaaran4799
5 жыл бұрын
@@CrunchEconometrix Thanks professor. When I write the command provided in the do file for both lag length and cointegration, it does not work? Do you have any idea why is that? thanks
@CrunchEconometrix
5 жыл бұрын
@@attilashaaran4799 What is the Stata error message?
@attilashaaran4799
5 жыл бұрын
@@CrunchEconometrix For lag it says ARDL is not recognised and for cointegration it says xtpedroni is not recognised
@CrunchEconometrix
5 жыл бұрын
@@attilashaaran4799 It is because you are yet to install the commands. Use either "ssc install ardl" or "findit ardl". Do same for Pedroni
@ekhaifa9732
4 жыл бұрын
Hi Doctor, how can I choose the number of lags to run the unit root test? Can I make a different lag for each variable (either 1 or 2) ?
@CrunchEconometrix
4 жыл бұрын
Hi EK, I showed how that is done.
@geethikamunasinge81
2 жыл бұрын
tell me why my data having gap
@CrunchEconometrix
2 жыл бұрын
Geethika, check your data source.
@felixadugyekye
5 жыл бұрын
Prof Thanks for the educative videos you have offered us. Through the videos i am now learning how to use stata. Please after running the ardl lag length command, it does not work. the feedback i get is " 'i' invalid name " . Please what should i do? Thanks
@CrunchEconometrix
5 жыл бұрын
Hi Felix, good to hear that your interests in Stata has picked up. The "i" is my country identifier. You need to create yours. Watch my video on "Reshape wide to long" to do same.
@CrunchEconometrix
5 жыл бұрын
Hi Felix, good to hear that your interests in Stata has picked up. The "i" is my country identifier. You need to create yours. Watch my video on "Reshape wide to long" to do same.
@felixadugyekye
5 жыл бұрын
@@CrunchEconometrix thanks Prof. I am grateful
@felixadugyekye
5 жыл бұрын
@@CrunchEconometrix thanks
@charifahaouraji7501
3 жыл бұрын
Hello Doctor, I hope this message reaches you well! Can I run ARDL with 26 observations (time series annual data)?? the estimated results will be correct Many thanks
@CrunchEconometrix
3 жыл бұрын
Hi Charifa, advisable to use more than 30 observations to account for lags.
@everythingnyimbo
5 жыл бұрын
Greetings again, what would make STATA give you an error of “code follows on the same line as open brace” after running the command you suggested to check for the optimal lag lengths?
@CrunchEconometrix
5 жыл бұрын
Means you have incorrectly specified the syntax. Check the braces makes sure you captured the one beneath. Otherwise, Stata won't run.
@Prof.Imadeddin-Almosabbeh
5 жыл бұрын
Thanks alot CrunchEconometrix, could you PLZ tel us about NARDL Panel Data. if there is any stata code for this test? and how?
@CrunchEconometrix
5 жыл бұрын
I honestly have no idea about the procedure. I'm yet to familiarize with it. You may need to check other online resources for procedures and Stata codes. May I know your name and from where (location) you are reaching me?
@Prof.Imadeddin-Almosabbeh
5 жыл бұрын
@@CrunchEconometrix I am Imadeddin Almosabbeh, associated prof. in economics, from Syria. Now, I am in saudi arabia.
@CrunchEconometrix
5 жыл бұрын
@@Prof.Imadeddin-Almosabbeh It's my humble pleasure, Prof...thanks for the positive feedback on my videos and for subscribing to my KZitem Channel. Kindly share with your students, friends and academic community in Syria 🇸🇾 and Saudi Arabia! 💕 😊
@soufianemahjoubi5758
4 жыл бұрын
what's the command to test variable (xit) included trend and intercept??
@CrunchEconometrix
4 жыл бұрын
I don't quite understand your question?
@gokhandemirtas
5 жыл бұрын
Thank you for your contribution. How can I obtain the do file of the panel ARDL estimation that you use in this video?
@CrunchEconometrix
5 жыл бұрын
Thanks Gokhan, for the positive feedback. Dofile is available on my website...may I know from where (location) you are reaching me?
@gokhandemirtas
5 жыл бұрын
I have reached it from your website. Thank you so much again. @@CrunchEconometrix
@CrunchEconometrix
5 жыл бұрын
My pleasure, Gokhan...and may I know from where (location) you are reaching me?
@gokhandemirtas
5 жыл бұрын
from Turkey @@CrunchEconometrix
@CrunchEconometrix
5 жыл бұрын
@@gokhandemirtas Awesome...please share my YT Channel link with all Turks!!!
@dr.rashmiahuja2375
5 жыл бұрын
Can you tell why you have tested unit root for lag 1 ? How to choose lag to run unit root tests ?
@CrunchEconometrix
5 жыл бұрын
Hi Dr. Rashmi, I explained this in the video. Note that this video is on panel ARDL so choosing optimal lags is slightly different from that of time series. May I know from where (location) you are reaching me?
@dr.rashmiahuja2375
5 жыл бұрын
Thanks for replying. I am from India. Actually I want to ask if I have to test each of my dependent and independent variable for unit root .Should i specify optimal lag (using aic,sbc) in unit root test command ? Plz guide.
@CrunchEconometrix
5 жыл бұрын
@@dr.rashmiahuja2375 I have a dofile on how to obtain the optimal lags for panel ARDL on my website. Link is at the end of the video.
@felixadugyekye
5 жыл бұрын
Please when i run the co integration test using the command xtpedroni gdpgr dcf exp tr, nopdols feedback i get is "unrecognized command: xtpedroni" what should i do? thank you
@CrunchEconometrix
5 жыл бұрын
Hi Felix, you have to install the syntax for it to run.
@joselopes4588
4 жыл бұрын
Dear Dr. Ngozi, I am performing a unit root test (syntax: xtunitroot ips var, lags(1) ) and i get the following output: Insufficient number of time periods to compute W-t-bar. Why is that?
@CrunchEconometrix
4 жыл бұрын
It says exactly that. You have few time series to engage the test. How many years do you have?
@joselopes4588
4 жыл бұрын
I have 27 years (1990 - 2016).
@CrunchEconometrix
4 жыл бұрын
Ok. 27years. No. of variables?
@soufianemahjoubi5758
3 жыл бұрын
Pr, i need your help. What's the best model if N= 24 country and T= 3 years ( 3 inquest))??
@CrunchEconometrix
3 жыл бұрын
Mahjoubi, apply techniques that relate with N>T panels: RE, FE, GMM, etc
@soufianemahjoubi5758
3 жыл бұрын
@@CrunchEconometrix exemple please of 3 years and 24 country please
@CrunchEconometrix
3 жыл бұрын
Use the suggested techniques.
@soufianemahjoubi5758
3 жыл бұрын
@@CrunchEconometrix GLM methode no?
@CrunchEconometrix
3 жыл бұрын
You may need to read more on that.
@AlishaMahajandse
3 жыл бұрын
do we need to convert series at I(1) for running ARDL?
@CrunchEconometrix
3 жыл бұрын
Alisha, browse through my Channel and watch my video on "This is how to specify ARDL model"... answers your query.
@AlishaMahajandse
3 жыл бұрын
@@CrunchEconometrix thankyou for ur response but my question is do we need to create a difference series of I(1) variable??
@CrunchEconometrix
3 жыл бұрын
Watch my video. I've just told you what you need.
@kidayantoko5422
5 жыл бұрын
I hope all is well with you. In my attempt of running a Pannel ARDL (Stata), I am facing the following problems, just know how to circumvent them. A positive Error Correction Term Unable to perform Unit test root (IPS-Pesaran and Shin ) for on variable. I am getting this answer ( Insufficient number of time periods to compute W-t-bar) While my data time varies (1960-2014). Trying xtunitroot llc lnpol Levin-Lin-Chiu (test requires strongly balanced data Please, Help.
@CrunchEconometrix
5 жыл бұрын
Hi Kidaya, a positive ECT implies that the model is explosive. There is no reversion to long-run equilibrium. You need strongly balanced panel dataset to run panel unit root test. The only option is to source for variables with sufficient observations for all the cross-sections in the panel.
@kidayantoko5422
5 жыл бұрын
@@CrunchEconometrix Thanks prof.
@mirnah.soliman4459
5 жыл бұрын
Hi Dr., thank you for this very informative video. I have a panel dataset including 151 countries spanning 28 years of annual data. Do u think using pmg/ mg/ ardl would be a bad choice of model ? And do u know an alternative that overrides this problem but can still give me a long run/ cointegration like relationship between the variables ? Thank you.
@CrunchEconometrix
5 жыл бұрын
Hi Mirna, most definitely. Once N>T, you cannot use the PMG, MG and DFE estimators. Your choices are FE, RE and GMM even though the time-dimensions is quite large. So, given what you have, I'll say you have a large panel dataset. Thanks for the kind words on my videos, deeply appreciated. May I know from where (location) you are reaching me?
@mirnah.soliman4459
5 жыл бұрын
@@CrunchEconometrix thank you for ur reply, I live in Egypt. Just another quick question if I may, do u think a CSDL model would work, from what I understand it might override the small T problem. What do u think ?
@CrunchEconometrix
5 жыл бұрын
@@mirnah.soliman4459 What's CSDL?
@mirnah.soliman4459
5 жыл бұрын
@@CrunchEconometrix It is the Cross-sectionally augmented distributed lag model. I think its command on Stata is xtdcce2
@CrunchEconometrix
5 жыл бұрын
@@mirnah.soliman4459 Oh ok, thanks.
@veenushankar8999
2 жыл бұрын
In the ARDL command what is 'i'???
@CrunchEconometrix
2 жыл бұрын
Veena, "I" is the country identifier.
@veenushankar8999
2 жыл бұрын
@@CrunchEconometrix Thankyou, ma'am :)
@everythingnyimbo
5 жыл бұрын
Nice videos, really helpful.. I am trying to conduct xtunitroot ips test however, STATA is giving me an invalid syntax error message, used the command "xtunitroot ips, var, lags(1)". What could be the problem?
@CrunchEconometrix
5 жыл бұрын
Hi Alex, thanks for the positive feedback on my videos. Deeply appreciated. You made an error in the syntax. Remove "var,". May I know from where (location) you are reaching me?
@everythingnyimbo
5 жыл бұрын
@@CrunchEconometrix the var, is like general.. for instance I have Manufacturing Value Added (ManVA) and when I type the command "xtunitroot ips, ManVa, lags(1)" it brings the error message. I am located in Malawi
@CrunchEconometrix
5 жыл бұрын
@@everythingnyimbo To be on the safer side, why not use my dofiles? They are available on my website.
@finomics
4 жыл бұрын
Maam If time period covers from 2000 to 2018 and the number of cross section units are 3 (t=19, and N=3) should I go for Panel ARDL ?
@CrunchEconometrix
4 жыл бұрын
Hi Fida, increase time to > 30.
@finomics
4 жыл бұрын
@@CrunchEconometrix if not possible to increase t because of missing observations
@CrunchEconometrix
4 жыл бұрын
The you have small sample bias which a Reviewer may take you up on.
@ashnagangoo6728
6 жыл бұрын
Hello Mme, is it up to us to select the number of lags while doing the unitroot test?
@CrunchEconometrix
6 жыл бұрын
Ashna Gangoo Yes
@ashnagangoo6728
6 жыл бұрын
Ok Mme, thanks a lot for your reply
@ghadaommezzine3065
5 жыл бұрын
When the dependent variable is i(0). can we applied the ARDL model?
@CrunchEconometrix
5 жыл бұрын
Adapting Pesaran et al (1999, 2001), yes you can.
@rahmanakbi1905
4 жыл бұрын
non
@rahmanakbi1905
4 жыл бұрын
My problem is that my database of 14 African countries from 1980 to 2017 does not work in the STAT software. I used the following command: forvall i = 1/14 { ardl dep var indep var if (country_code == "i"), maxlag (p, q, ....) matrix list e (lags) di } the message was "no comments" Help me?
@CrunchEconometrix
4 жыл бұрын
Hi Rahma, the error message is a bit strange to me.
@rahmanakbi1905
4 жыл бұрын
Do you have an order that can execute the ARDL panel for 14 African countries?
@CrunchEconometrix
4 жыл бұрын
@@rahmanakbi1905 That is what I showed in the video.
@rahmanakbi1905
4 жыл бұрын
Hello, I watched this video and used all the commands but STATA 15 MP did not work for me then you have another command for 14 African countries
@soufianemahjoubi5758
4 жыл бұрын
why we choose number of lags 1, but we don't choose lags 0?? or 2??
@CrunchEconometrix
4 жыл бұрын
Your query is unclear, Mahjoubi. What are you referring to?
@soufianemahjoubi5758
4 жыл бұрын
@@CrunchEconometrix 8 variables and 24 country
@CrunchEconometrix
4 жыл бұрын
How many years?
@soufianemahjoubi5758
4 жыл бұрын
@@CrunchEconometrix 18
@CrunchEconometrix
4 жыл бұрын
Use CCE, CCE-MG and AMG techniques. I don't have videos on these. You will need to search online for resources and guides.
@fizzasunny1606
4 жыл бұрын
I can't find do file please guide me
@CrunchEconometrix
4 жыл бұрын
Hi Fizza, kindly note that dofiles are no longer free but available on my website upon payment of a token after which you are allowed a one-time download. Here's the link cruncheconometrix.com.ng/shop/
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