Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 10th
Advertisement Remove all ads

If n = 5, x¯ = 6, ∑x2 = 765, then calculate the coefficient of variation. - Mathematics

Advertisement Remove all ads
Advertisement Remove all ads
Sum

If n = 5, `bar(x)` = 6, `sumx^2` = 765, then calculate the coefficient of variation.

Advertisement Remove all ads

Solution

Standard deviation (σ) =`sqrt((sumx^2)/"n" - ((sumx)/"n")^2` 

= `sqrt(765/5 - (6)^2`

= `sqrt(153 - 36)`

= `sqrt(117)`

σ = 10.816

Coefficient of variation = `sigma/(barx) xx 100%`

= `10.816/6 xx 100%`

= 180.266%

Coefficient of variation = 180.27%

Concept: Coefficient of Variation
  Is there an error in this question or solution?
Advertisement Remove all ads

APPEARS IN

Tamil Nadu Board Samacheer Kalvi Class 10th SSLC Mathematics Answers Guide
Chapter 8 Statistics and Probability
Exercise 8.2 | Q 4 | Page 316
Advertisement Remove all ads
Share
Notifications

View all notifications


      Forgot password?
View in app×