Department of Pre-University Education, KarnatakaPUC Karnataka Science Class 11

# If the Sum of the Squares of Deviations for 10 Observations Taken from Their Mean is 2.5, Then Write the Value of Standard Deviation. - Mathematics

If the sum of the squares of deviations for 10 observations taken from their mean is 2.5, then write the value of standard deviation.

#### Solution

The sum of the squares of deviations for 10 observations, taken from their mean, is 2.5.
Square of each deviation =  $\frac{2 . 5}{10} = 0 . 25$

Standard deviation = $\sqrt{0 . 25} = 0 . 5$

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#### APPEARS IN

RD Sharma Class 11 Mathematics Textbook
Chapter 32 Statistics
Q 2 | Page 49