Question

find the variance of the data 2, 10, 1, 9 and 3​

Answer 1

Answer:

ham nhi janta ha

Answer 2

Variance = 17.5

Variance:

The formula to find variance is:

S² = ∑($x_{i}$ - $\bar{x}$)²/ n-1

where,

S² = sample variance

$x_{i}$     = the value of the one observation

$\bar{x}$ = the mean value of all observations

n = the number of observations

Hence,

n = 5

$\bar{x}$ = 5

S² = ∑($x_{i}$ - $\bar{x}$)²/ n-1

S² = 70/5-1

S² = 70/4

S² = 17.5

Hence, the variance of the data 2, 10, 1, 9 and 3​ is 17.5