Question

The scores of batsman were 38,70,48,34,42,55,63,46,54,44 find varience

Answer 1

Answer:

The variance is 125.2.

Step-by-step explanation:

The formula of variance is:

$Variance=\frac{1}{n-1}\sum (x_{i}-\bar x)^{2}$

Compute the mean of the data as follows:

$\bar x=\frac{1}{n}\sum x_{i}=\frac{1}{10} [38+70+48+34+42+55+63+46+54+44]=49.4$

Compute the variance as follows:

$Variance=\frac{1}{n-1}\sum (x_{i}-\bar x)^{2}\\=\frac{1}{10-1}[(38-49.4)^{2}+(70-49.4)^{2}+(48-49.4)^{2}+...+(4449.4)^{2}]\\=125.2$

Thus, the variance is 125.2.