Question

The mean (x~) of 15 observations is 98. What is the sum of all the observations?

Answer 1

We have,

$\qquad \sf \quad mean( \: \overline{x} \: ) = 98 \\ \\ \sf \implies \frac{(sum \: of \: all \: 15 \: observations)}{15} = 98 \\ \\ \implies \sf sum \: of \: all \: observations = 98 \times 15 \\ \\ \qquad\qquad\qquad\qquad\qquad\qquad = \bf \: 1470$

$\mid \underline{\underline{\LARGE\bf\green{Brainliest \: Answer}}}\mid$

Answer 2

Step-by-step explanation:

So

✯

✯

15

(sum of all 15 observations)

=98

⟹sum of all observations=98×15

=1470