METHODS OF DATA ANALYSIS
MEASURES OF DISPERSION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
divide the 3rd quartile by the 1st quartile
|
|
|
subtract the biggest number by the smallest number
|
|
|
divide the biggest number by the smallest number
|
|
|
subtract the 3rd quartile by the 1st quartile
|
Detailed explanation-1: -To find the interquartile range (IQR), first find the median (middle value) of the lower and upper half of the data. These values are quartile 1 (Q1) and quartile 3 (Q3). The IQR is the difference between Q3 and Q1.
Detailed explanation-2: -Quartiles are used to calculate the interquartile range, which is a measure of variability around the median. The interquartile range is simply calculated as the difference between the first and third quartile: Q3–Q1. In effect, it is the range of the middle half of the data that shows how spread out the data is.
Detailed explanation-3: -The interquartile range is the difference between upper and lower quartiles.
Detailed explanation-4: -The distance between the first and third quartiles-the interquartile range (IQR)-is a measure of variability. It indicates the spread of the middle 50% of the data.