Question

 

Calculate the coefficient of variation from the data given above.

Class Interval Frequency
3-4 3
4-5 7
5-6 22
6-7 60
7-8 85
8-9 32
9-10 8

 

06 Mar 2026
Answer :
Word Count : 393
To calculate the coefficient of variation (CV), we first need the mean and standard deviation. Step by step: --- Step 1: Find the midpoints (x) of each class interval [ x = \frac{\text{lower limit + upper limit}}{2} ] | Class Interval | Frequency (f) | Midpoint (x) | f × x | | -------------- | ------------- | ------------ | ----- | | 3-4 | 3 | 3.5 | 10.5 | | 4-5 | 7 | 4.5 | 31.5 __________ __________ _____ ________ ___.
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