Question

If variance is 9 then standard deviation is ​

Answer 1

Answer:

3

Step-by-step explanation:

S.D is square root of Variance

Answer 2

Standard deviation is 3

GIVEN:- variance = 9

TO FIND:- standard deviation

SOLUTION:-

• Variance is equal to the average squared deviations from the mean and standard deviation is the square root of the variance number.

• Variance, as well as Standard Deviation measures the, reflect of variability in distribution, but their units are different as Standard deviation is expressed in the same units as the actual values.

As we know, standard deviation is the square root of the variance number.

$standard \: deviation = \sqrt{variance}$

According to the question variance is given as 9

Standard deviation

$= \sqrt{9} \\ = 3$

Hence, standard deviation is 3

#SPJ2