Question

Marks
If the sum of 18 observations is 90 then the mean of
the observations is
5
6​

Answer 1

Answer:

5

Step-by-step explanation:

$\sum x$ = 90 ;  and n = 18

we know, mean, $\bar x = \frac{\sum x}{ n}$

                               =  90/18

                                = 5

Answer 2

Answer:

Since sum of 18 observations is 90

mean= 90/18

= 5

Hence, the mean is 5