The standard deviation of the observations 6,5,9,13,12,8,10 is

Options

A. `6`
B. `sqrt(6)`
C. `frac{52}{7}`
D. `sqrt(frac{52}{7})`

Answer

`sqrt(frac{52}{7})`

Explanation

The correct option is Option 4

`sqrt(frac{52}{7})`



The given observations are `6,5,9,13,12,8,10`

`N=7`


Now,

Sum of observations:

`Sigma x_i=6+5+9+13+12+8+10= 63`

...