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 |
Answer :
Word Count : 393
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Skip in 10
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 | | 5-6 | 22 | 5.5 | 121 | | 6-7 | 60 | 6.5 | 390 | | 7-8 | 85 | 7.5 | 637.5 | | 8-9 | 32 | 8.5 | 272 | | 9-10 | 8 | 9.5 | 76 | --- Step
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