Question

3. If the mean of 12 observations is 9, find the sum of
the 12 observations.​

Answer 1

Step-by-step explanation:

$Mean = \frac{Sum}{No \: \: of \: \: Observations} \\ 9 = \frac{Sum}{12} \\ 9 \times 12 = Sum \\ \boxed{ \underline{ \underline{108}} = Sum}$

Answer 2

Answer:

108

Step-by-step explanation:

mean = sum

_

no. of observation

9 = x/ 12

9× 12= x

108= x