Question

Sum of 15 observations is 420 ,find mean.

Answer 1

Sum of observations = 420

Number of observation = 15

Mean = Sum of observations / Number of observation

Mean = 420 / 15

= 28

Answer 2

Hlo friend.. Cutiepie Here..

Here is ur answer :

Sum of all the observations = 420

Total no. Of observations = 15

Mean :

$= \frac{sum \: \: of \: \: all \: \: observations}{total \: \: number \: \: of \: \: observations}$


$= \frac{420}{15}$


$= 28$


HOPE IT HELPS YOU..