Dr nic, in 2022, your videos are still extremely helpful. So clear and concise. Thank you for this gift.
@DrNic
2 жыл бұрын
Glad you like them! Who'd have thought they would still be going strong after ten years!
@Andrei-ld3gw
4 жыл бұрын
Out of all the statistics channels and videos, this by far is the most helpful; very simple and concise, didnt use any convoluted words to impress audience but precisely to help understand
@susanhaas5681
7 жыл бұрын
This is not only EXTREMELY helpful but hilarious! So fun to watch!
@bupekabamba6017
7 жыл бұрын
Hehehehe the notes she was leaving to make sure you pause the video are just hilarious.
@williamhenryharrison9thpre139
Жыл бұрын
Korni nyo
@DrMichaelMoroney
9 жыл бұрын
This is a useful video for students that are still at a point where they are unsure which of many statistical tests they should use.
@DrNic
9 жыл бұрын
Dr Michael Moroney Thanks. I think it is also helpful in that it shows some of the relationships between the different types of tests in a way that a flow diagram doesn't.
@DrNic
11 жыл бұрын
As you can see from other questions, it is quite usual for the question to be vague. Only with experience do you work out what details are needed. It looks as if I need to do a video on non-parametric tests, which is what most of those are.
@steeltalon2011
10 жыл бұрын
Impressive. Your lock step approach makes it possible to analyze and conclude which test to use. I've been looking for this for a looooooong time. Thanks.
@DrNic
11 жыл бұрын
Thank you. I did put a lot of thought into devising that diagram.
@winvictorywin5612
4 жыл бұрын
Very interesting presentation👏👏 I am having airborne dust concentrations data for >1 micron size, >3 micron, >5 micron and >10 micron size. (> means greater than) These data was taken before and during dust producing work in field study. N=5 How can i compare these before and during operations data ? It seems that there is relative percent variation in dust concentrations in atmosphere between before and during operation data. (Taking >1micron as 100 %) Before operation: The relative percent variation of concentration with different particle size is as below. For example Concentration of >1 micron size particle is 100%. >3 micron: 80% >5 micron : 60% >10 micron: 40%. During operation: Concentration of >1 micron size particle is 100%. >3 micron: 90% >5 micron : 80% >10 micron: 70%. It seems that >10 micron particle share is increased due to that machine operation...? Which test is suitable for analysing these type similar data for discussion ? How to use statistics? Any comparison among these concentrations of different particle sizes ? thank u.
@irsyadfirdaus2636
3 жыл бұрын
Thank dr, you help a lot
@bhiks1377
3 жыл бұрын
Helpful Diagram 👏
@anikanashatmatin6860
2 жыл бұрын
Do u have any email id where u personally assist for PhD scholar? Kindly share if so
@DrNic
2 жыл бұрын
@@anikanashatmatin6860 Sorry - I don't have time for individual tuition/consultation at present.
@MianndaYou
5 жыл бұрын
Wow, you channel is amazing! Thank you for making something that I thought I will never understand so easy! Three hours of lecture from my professor vs 9 minute video from you.
@DrNic
5 жыл бұрын
Hi Anna Thanks for your endorsement. It may be that the three hour lecture gave you useful stuff, and the video helped organise it. Teaching statistics is very difficult, which makes learning it harder than it might need to be. Keep watching!
@briansmith1775
4 жыл бұрын
Thank you so much. This is a real life saver. Believe me. Among thousands of videos yours are straight to the point.
@christianprofessional
7 жыл бұрын
Thank you so much. This would have helped me not be so far behind in my introduction to Statistics course. I am going to pass this video to my former professor.
@aakanshashukla1414
5 ай бұрын
Hello there!! I watched the video "Statistical Tests: Choosing which statistical test to use". It very well explained all types of statistical tests and how to use by giving examples and elimination of tests based on Data, Samples and purpose. THANK you!!
@saiyan7010
8 жыл бұрын
my bio stat teacher just read thro the power point in mono tone voice and didn't give introduction on any new hypothesis test we learned. i was struggling when reading text book (i am not good at learning from reading text book). ur video is very helpful and concise. it really helped me to understand the purpose of each test a lot better and make statistic more enjoyable. Thank you very much Dr Nic.
@Tetracarbon
7 жыл бұрын
I love love love your Venn diagram approach!!! Thank you so much. I have read quite a few econometric textbooks and they still don't make it anywhere quite as clear as this. Thank you!
@philboy794
5 жыл бұрын
Most useful diagram i have found and its so simple. If i found this earlier I wouldn't have had such are hard time following along in class!!!!
@DrNic
5 жыл бұрын
That is great to hear. Usually textbooks use a flow chart approach, but I wanted to make one that held everything together so you can get an overview. It is my own invention, so I'm happy you find it helpful.
@nachiketjangam4343
4 жыл бұрын
just 2 mins in the video and It has so much clarity!, it means a lot of efforts were put by you to summarize this. Thank you for making our lives easier.!
@DrNic
4 жыл бұрын
Thanks - I really have put a lot of thought in, so it is nice to be appreciated.
@tiffam2938
11 жыл бұрын
Your videos, in my opinion, have some of the best explanations of basic statistics. Thank you.
@kiranmehr4118
7 жыл бұрын
THANK YOU, MY GOD you saved me! Love Helen and her attitude haha! Thank you again :).
@user-vc6wo7cq8v
11 күн бұрын
Best explanation I’ve seen yet! Solid gold! Thank you!!
@paularunslondon
6 жыл бұрын
I've not finished the video yet, but it's been really helpful so far! Breaking it down into those questions has helped me figure out what I'm looking for.
@DrNic
6 жыл бұрын
So glad to hear it! Most text books etc use a flow diagram method, but I made up this way of displaying it as it shows the relationships between the methods as well.
@aaronschrock8579
5 жыл бұрын
i cant believe how helpful this was
@DrNic
5 жыл бұрын
Thanks - I thought really hard about how to present this in a more holistic way than the usual flowchart approach, so I am happy it is helpful.
@titatita3896
6 жыл бұрын
I'm studying for my comprehensive exam..and found this very useful..thanks. I don't mind the accent at all...
@marcoglara2012
3 жыл бұрын
I love how easy to understand and logical this was. The visual displays helped my understanding immensely. I wish all statistics teachers were this good at conveying information
@DrNic
3 жыл бұрын
Thanks - I thought really hard about this to make it clear.
@draughtlab6837
3 жыл бұрын
This is hands down the most useful graphic I've seen. Thank you, Dr. Nic
@DrNic
3 жыл бұрын
Wow, thanks! It took quite a bit of thinking to come up with it.
@DrNic
11 жыл бұрын
A bit depends on your sample size. You could use Spearman correlation or Kendall's tau.
@DrNic
11 жыл бұрын
Seeing there were two independent samples, I would recommend difference of two means, independent samples. If the same people were measured before and after, then it would be paired difference of two means.
@thesolvit7407
4 жыл бұрын
I don't know which one is correct in analyzing the difference between the pretest and posttest if the number of participants in my control group is 15 and control group is also 15, defying the criteria of using parametric test. What should I do? Please help♥️😭
@tasnimkeddo5548
2 жыл бұрын
Now we are in coronavirus year
@sohailasghar8471
5 жыл бұрын
Various topics are now very easy to understand after listening ur lectures. Keep it up. You are spreading the wisdom
@abiyotlemagamtessa2572
6 жыл бұрын
I found it really help full, I am attending my MPH but can really Understand my instructor in the class but after getting this video wow, I understand it thank you so much.
@SamA-vc4uy
5 жыл бұрын
Good, informational video and thank you for including closed captions!
@iyer5
12 жыл бұрын
the way u have editted ur videos is simply appreciable!!!! loved dat statement, " If you have any kind of self esteem!! Pause!! " hahahaha nyc 1 truly admirable
@mycophil
9 ай бұрын
"Pause if you have any kind of self-esteem" 😂
@HarpreetSingh-ke2zk
7 жыл бұрын
We used to learn through animations. Excellent summarized presentation. Helen bringing statistical queries as an example.
@ciarademp
10 жыл бұрын
wow - i just understood my statistics module that happened in 2009 for the first time - thank you!
@DrNic
11 жыл бұрын
It is good to draw two boxplots and/or histograms as well, as that gives an indication of the spread of the two samples as well. Graphs are an essential part of any statistical analysis, and will have to be the subject of another video!
@shwetathakar1369
4 жыл бұрын
Wonderful idea for brainstorming... that she let us think first and then give answer.
@DrNic
4 жыл бұрын
I'm glad you like it. There is a follow-on video that gives you some more examples too. kzitem.info/news/bejne/sYKKwKaHrWJihmk
@radhikasrinivasa3068
4 жыл бұрын
I have developed a lot of respect and love for statistics! thanks to you !!
@DrNic
4 жыл бұрын
That is lovely to hear, Radhika. Understanding statistics is such an important skill for being fully informed. Glad I could be of help.
@radhikasrinivasa3068
4 жыл бұрын
@@DrNic thrilled to get a reply from you ma'am
@millybee5499
5 жыл бұрын
Wow that Eureka moment!!!! I finally get it 😂😂😂😂 thank you so much!!! I can finish my dissertation in peace now! This is so simple and straightforward 👍
@DrNic
5 жыл бұрын
That is great news.
@julietoffojua4229
5 жыл бұрын
Nice one. Technology in action. I will continue to practice. Thanks.
@wfhdick
Жыл бұрын
These vids would have been so great when I did stats and epi many years ago. What a great resource.
@DrNic
Жыл бұрын
Thanks
@TheJazzzilla
Жыл бұрын
Brilliant video. Loved the sarcastic comments... it got me to pause. Great stuff Dr Nic
@DrNic
Жыл бұрын
Glad you enjoyed it. The comments from my editor who is also my son. He's pretty funny
@firebirdies
5 жыл бұрын
all humans should watch this at some point in their lives
@nurul1495
5 жыл бұрын
Pause if you care your education😂😂anyway good video. Thanks sm😆
@chuminfeng5205
4 жыл бұрын
the best summary of the most frequently used statistic test, saving my time to reference my textbook!
@DrNic
4 жыл бұрын
Glad to hear it. I was pleased with how it turned out.
@chuminfeng5205
4 жыл бұрын
@@DrNic Can I ask, I have a group of receivers that more than 300 observations, send them two types of email, to see whether the open rate is significantly different between two types of emails? which statistic test to use? open or not is a nominal data, but I have only one sample, I can not use the difference of two proportions, no?
@chuminfeng5205
4 жыл бұрын
@@DrNic or should I use chi-sq test?
@DrNic
4 жыл бұрын
@@chuminfeng5205 You do have two samples - the two types of email. So you can do difference of two proportions - or you can do the chi-sq test as you suggest. I have a video on the chi-sq test. kzitem.info/news/bejne/y56wlqmYkGJ2iqA and then kzitem.info/news/bejne/0pyu4Htsf5mHn4I
@chuminfeng5205
4 жыл бұрын
@@DrNic Definitely, it inspires me for the idea. I join your channel, and can I ask you to create more videos about A/B testing, or what is the difference between traditional statistical modeling and machine learning?
@dramaadictisback4986
Жыл бұрын
Thank you so much for this! You didn’t just teach the content but also how to navigate and use what we learnt. Your videos have been exceptionally helpful. God bless you ❤
@DrNic
Жыл бұрын
So happy to hear that.
5 жыл бұрын
thank you soon much :) it was very clear and systematic, helped a lot!
@CrazyBeautifulLife58
9 жыл бұрын
Partially helpful, but a bit confused about what the names of tests translate as - I think they're the same concepts as I've learnt in my lectures, but they don't have exactly the same names
@hai77uk
11 жыл бұрын
this study done on air plan staff communication. observer used a valid scale 0-30 to observer communicate before implement a wireless head set and then after implement . the sample was random before implementation and another random sample used after implementation.
@seapeajones
4 жыл бұрын
Two master's courses in & your video clearly explains what my text did not. Thank you!
@DrNic
4 жыл бұрын
Glad it helped!
@lakshitdagar
5 жыл бұрын
Gem of a video!!
@abigailyeboah2853
6 жыл бұрын
Very helpful video. Helen's got an attitude though. Hilarious.
@DrNic
6 жыл бұрын
Thanks Abigail. She makes me laugh. My son, who was the editor for many of these videos, has a quirky sense of humour.
@wingbliss
12 жыл бұрын
Thank you, your help me realised the importance of creativity and art students. A maths student think: DF = (s12/n1+s22/n2)2/{[(s12/n1)2/(n1-1)]+[(s22/n2)2/(n2-1)]} An Art student makes things fun and easy! Thank you. With gratitude.
@shishirmahmood1766
9 ай бұрын
This is an excellent video to understand TYPES of test. Hats off!!
@DrNic
8 ай бұрын
Thank you very much!
@hend1243
5 жыл бұрын
One of the most useful vidios.. Thanks a lot
@rubibojorquez3216
6 жыл бұрын
Well explained and fun. Thanks
@veerendrasinghnagoria6362
10 ай бұрын
Your video was both simple and effective. It nicely presented the data, samples, and the purpose of analysis, helping in the selection of the appropriate statistical test. Thank you!
@DrNic
8 ай бұрын
Glad you enjoyed it!
@migishaboyd
Жыл бұрын
I guess that means i'm doing regression analysis. Tons of help, here, Dr. Nic! God bless you!
@DrNic
Жыл бұрын
Thank you for that. Good luck! I have a series about multiple regression that is also helpful for linear regression.
@mfgranja
10 жыл бұрын
From Bogotá-Colombia Thank you :-), this is a really good work, you inspire us as teachers-- :-)
@caldeh
8 жыл бұрын
I want some choconutties!!!!
@DrNic
8 жыл бұрын
Me too.
@tianbelawati4450
3 жыл бұрын
Thank you for a clear explanation. Please allow me to share this with my students.
@DrNic
3 жыл бұрын
Please do!
@DrNic
3 жыл бұрын
We do ask teachers to become channel members to help us keep making videos. You would also get access to many more videos specific to channel members. kzitem.info/rock/G32MfGLit1pcqCRXyy9cAgjoin
@parambuch4679
Жыл бұрын
Thank you for explaining such complex concepts of choosing statistical test in easiest manner. Really helpful.
@DrNic
Жыл бұрын
Glad it was useful. It took quite a lot of thinking to come up with that format
@KamalAsasi
7 жыл бұрын
Helen is always angry when she asks people to answer her questions. She should change her attitude otherwise she can not find the real answers from the respondents and therefore, the results are not valid.
@xrc7445
6 жыл бұрын
You wouldn't think she has an attidute if she was a man. Anything to bash a woman entrepreneur even if she's a cartoon. For a man, this behaviour would go un-noticed and, mostly, un-commented..
@MNSTRMDVNCS
4 жыл бұрын
Such a funny remark to teach about response bias.
@KamalAsasi
4 жыл бұрын
Guys, plz take it easy and don't consider my comment as sexist. I just try to explain that we should not force someone to answer our questions as it can effect they response. I apology if I offended someone. All the best.
@mobinansarivlog9126
Жыл бұрын
@@xrc7445 it's her choice
@baul6843
9 ай бұрын
@@xrc7445 Sure, make everything about gender again. No, the situation would not be judged differently if she was a man and no one is bashing female entrepreneurs. It's a cartoon made for education. Leave your stupid world views out of here.
@nush4u
10 жыл бұрын
Thank you.. very helpful :)
@rameshmaddali6208
7 жыл бұрын
Truly awesome vedio. If i have a teacher like you i am blessed. But still i feel now as i found you. Teaching is a great art. You have proven. I am curious to know about you.
@deepsirathore4339
Жыл бұрын
Thank you for explaining with clarity about the various statistical tests.
@DrNic
Жыл бұрын
You are welcome!
@TheLadiesman217137
8 жыл бұрын
Lol, didnt even pause... haha.. *confused
@dieutran9066
7 жыл бұрын
You save my life, save my time. Loads of kisses to you :* :* :*
@SHANEDABIRDMAN2
7 жыл бұрын
Diệu Trần hhhh
@soldirix2666
10 жыл бұрын
I Love the art used in these videos. Very nice work!
@DrNic
10 жыл бұрын
Thanks - the artist is an anime fan, as I'm sure you have guessed.
@mahbubhasan8194
4 жыл бұрын
Very useful for beginner like me, which allows me to do thinking further time for research.
@DrNic
4 жыл бұрын
Happy to hear that.
@Adrian-ly7by
6 жыл бұрын
is that brienne from game of thrones?
@PuneetMehra
8 жыл бұрын
Your accent is totally non comprehensible. pickets? choco latte? tist?
@veggiepants2707
6 жыл бұрын
^ spoken like a true aussie
@globexbeautysolutions7125
6 жыл бұрын
New Zealand accent.
@whoeverwhateverany1
6 жыл бұрын
I beg to differ. it is comprehensible, it's just probably an accent you are not used to. oh and it's choco nutties by the way. There are many different accents so it wouldn't harm to learn to get used to some new one once in a while. Wouldn't it be boring if everyone spoke in the exact same way?
@WorldoftheNebulous
6 жыл бұрын
yo I blew on my screen because I thought your profile pic was a piece of hair hah got me
@1307sammiemc
12 жыл бұрын
How good is this: Doing an online degree - without this type of resource would be totally lost. Thank you :)
@naithal2901
Жыл бұрын
Thank you for such a great video! Really benefited from the content but also the methodical structure and system that you taught the concept through.
@DrNic
Жыл бұрын
Glad you enjoyed it! I put a lot of work into the structure so it is good to be appreciated
@sonyamunoz33
4 жыл бұрын
Thank you very much, you have done a great job with simplifying what test to choose.
@DrNic
4 жыл бұрын
Thanks. I did a lot of thinking for this.
@desaipriyanshi1997
4 ай бұрын
some of the best explanation among others. it's very helpful. thank you.
@christophersneed5586
4 жыл бұрын
Best explanation yet! Thank you for posting this. Wow! I chose the correct one almost every time!
@DrNic
4 жыл бұрын
Thanks and well done. There is another practice video as well.
@malekazaz1046
6 жыл бұрын
Perfect Video for New Researcher
@ravigadani
Жыл бұрын
This is an insanely helpful video. The topic has been clearly explained and the examples are on spot. Thank you so much.
@DrNic
Жыл бұрын
You're very welcome!
@DrNic
11 жыл бұрын
Interval/ratio data is sometimes called numerical or measurement. You can see more about that in our video about types of data. There are several t-tests but they are for interval/ratio data. Test for difference two means and test for a mean are both t-tests. Spearmans Rho is used when you would normally do a correlation or regression, but your data is ordinal. I'm afraid you haven't given me enough information for me to be able to answer your question clearly.
@ugyennorbu7246
2 жыл бұрын
Thank you for succinct and clear explanation. Such material are hard to come by.
@DrNic
2 жыл бұрын
I work hard to make it clear. So thanks!
@krishnadesai79
4 жыл бұрын
A nice and innovative way to explain... Thank you so much.
@DrNic
11 жыл бұрын
It's a chi squared test against a distribution. You found ten animals so if there was no difference you would have got 2 in desert, 4 in forest and 4 in city. In excel you set up one block with the numbers 3,7,0 and another block with 2, 4, 4. Then use chitest to find the p-value. The null hypothesis is that the distribution of found animals is the same as the distribution of the number of places. Hope this helps.
@DrNic
11 жыл бұрын
Thanks. The thing is, if you use a computer package, it uses the applicable statistic and converts the answer to a p-value. I'll put that in my list of videos to make! Working on time series analysis and reporting at present.
@pricklypotato
2 жыл бұрын
I love this video so much. The pause and play gets me laughing every time.
@DrNic
2 жыл бұрын
So happy to hear that. Some people think they are silly, but others enjoy them.
@dimimintabba7485
Жыл бұрын
Great video, thanks. The bit I would have liked more of an explanation of was the difference between "comparing two statistics" and "looking for a relationship".
@DrNic
Жыл бұрын
That is a good thought. It was getting pretty long and came at the end of a course when the students generally would know that.
@manishasamant5089
Жыл бұрын
This is a very good, easy-to-understand video. Thanks to you for creating and sharing this very powerful explanation and unexpectedly hilarious visuals.
@DrNic
Жыл бұрын
Thanks - my son/editor has a warped sense of humour.
@cybertaiga9534
2 жыл бұрын
This is a very good, easy-to-understand video. Kudos to you for creating it and thanks a heap for sharing it.
@DrNic
2 жыл бұрын
Glad it was helpful! I thought really hard about it and used it for teaching a university class.
@rpkumawat4585
2 ай бұрын
Excellent summarised presentation.
@padiahiral
3 жыл бұрын
Thank you for enlightening us about various statistical tests.
@DrNic
3 жыл бұрын
Glad it was helpful
@kareemmehdi1620
3 жыл бұрын
Choosing statistical test is very important for every researcher. Thanks a lot.
@DrNic
3 жыл бұрын
Yes, you are right
@ozashweta2037
4 жыл бұрын
Thank you. Very nice explanation with example.
@FireForEffect1533
3 жыл бұрын
Dear Dr. Nic, Thank you for sharing this information. This helped me a lot on one of my research projects and I will certainly use your advice when it comes time to write my dissertation. Thanks again!
@DrNic
3 жыл бұрын
Glad it was helpful!
@Natalie-cs4hm
8 жыл бұрын
All is great and helpful, thanks! But for us, international students - I wish you described the conditions of the problems a bit slower... But when you eliminate different tests' possibilities, the speed is perfect, easy to follow.
@DrNic
8 жыл бұрын
+natalia kureneva I'm glad you find them helpful. One of the great things about KZitem is you can always pause and go back over a bit you didn't get. - Or read the captions.
@animalxxv
8 жыл бұрын
+natalia kureneva On the video, you can change the playback speed to a slower speed using the settings button
@dhruvisedha1876
2 жыл бұрын
Thank you Respected Sir for providing video on an elaborated session on statistical tools, step approaches makes it possible to analyze and conclude which test to use, deep knowledge on experimental research design, precisely dealing with all parameters, easy explanation on research tools as interview, questionnaire, standardized testing and rating scale and it is with super easy and interesting examples
@DrNic
2 жыл бұрын
That is great to hear.
@DrNic
11 жыл бұрын
Happy to hear it.
@naziya9967
3 жыл бұрын
Iam from india,I feel so glad to come accross this Dr Nice channel .all playlist are very useful 👍👍
@DrNic
3 жыл бұрын
Glad to hear that
@naziya9967
3 жыл бұрын
@@DrNic mam it's great honour to me.that you replied.keep in touch with me mam.
@NasimaEbrahimi
Жыл бұрын
Thank you so much for wonderful video about choosing statistical test for analysing data.
@DrNic
Жыл бұрын
You are welcome
@sheebee8398
7 жыл бұрын
Thank you very much! I wish I had seen your video during my class and could have shared it with my classmates. Brilliant.
@ansariyasmin7474
3 ай бұрын
Thank you for clarification on the tools
@abrahmlinkan
4 жыл бұрын
Nice video. I am a newbie in stats. Hope I can find the answer to my queries here: 1) Where do the other tests like Mann Whitney U test, ANOVA, Kruskal Wallis fall? 2) When we want to calculate the difference of two means (independent samples), we calculate it by a two-sample t-test. What exactly are the 'tests for proportion', 'test for mean' and the test for 'difference of two proportions'?
@DrNic
11 жыл бұрын
You should watch another of our videos about types of data, nominal, ordinal, interval/ratio so you can get a better idea of what kind of data this is. As the video shows, some people would say the data is ordinal, and you have to use a non-parametric measure. Others would say that it is interval, and you can use a t-test. I would do both. They will almost certainly give the same answer with regard to the original question, though the p-values may differ a little.
@cpatel.connect
9 ай бұрын
Hi, I have gone through the video called Statistical Tests: Choosing which statistical test to use on Dr Nic's Maths and Stats. It briefly covers test for a mean, test for a proportion, difference of proportions, difference of two means - independent samples, difference of two means - paired, chi-squared test for independence and regression. Looking forward to learn and grow together. Thank you so much. Best regards, Chandrakant Patel, 18 Nov 2023. 😊💐🙏🏼
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