Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 10th
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The standard deviation and coefficient of variation of a data are 1.2 and 25.6 respectively. Find the value of mean. - Mathematics

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Sum

The standard deviation and coefficient of variation of a data are 1.2 and 25.6 respectively. Find the value of mean.

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Solution

Standard deviation (σ) = 1.2

Coefficient of variation = 25.6

`sigma/bar(x) xx 100` = 25.6

`1.2/bar(x) xx 100` = 25.6

⇒ `25.6 xx bar(x)` = 1.2 × 100

`bar(x) = 120/25.6`

= `(120 xx 10)/256`

= 4.687

= 4.69

Value of mean = 4.69

Concept: Coefficient of Variation
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APPEARS IN

Tamil Nadu Board Samacheer Kalvi Class 10th SSLC Mathematics Answers Guide
Chapter 8 Statistics and Probability
Exercise 8.2 | Q 2 | Page 316
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