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प्रश्न
Given below is the information about marks obtained in Mathematics and Statistics by 100 students in a class. Which subject shows the highest variability in marks?
| Mathematics | Statistics | |
| Mean | 20 | 25 |
| S.D. | 2 | 3 |
उत्तर
For Mathematics,
C.V. = `"S.D."/"Mean" xx 100`
= `2/20 xx 100`
10
For Statistics,
C.V. = `"S.D."/"Mean" xx 100`
= `3/25 xx 100`
= 12
∴ (C.V.)S > (C.V.)M
Hence, the subject Statistics show higher variability in marks.
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