Illustrate and compute for quartiles of ungrouped data.
The quartiles are the score points which divide a distribution into four equal parts. Twenty-five percent (25%) of the distribution are below the first quartile, fifty percent (50%) are below the second quartile, and seventy-five percent (75%) are below the third quartile. Q1 is called the lower quartile and Q3 is the upper quartile. Q2 is nothing but the median.
The difference between Q3 and Q1 is the interquartile range.
Since the second quartile is equal to the median, the steps in the computation of median by identifying the median class is the same as the steps in identifying the Q1 class and the Q3 class.
a. 25% of the data has a value less than or equal to Q1
b. 50% of the data has a value less than or equal to 𝑋̃ or Q2
c. 75% of the data has a value less than or equal to Q3
#veeteachchannel
#quartiles
#grade10math
Негізгі бет QUARTILES OF UNGROUPED DATA| GRADE 10
Пікірлер: 37