Question

Emmy did a survey of how many games each of $20$ friends owned, and got the following data: $5,7,12,13,4,6,8,12,9,16,13,12,5,13,7,17,3,9,12,14.$

Find the mean.

• A. $8.55$
• B. $7.59$
• C. $5.49$
• D. $9.85$

Answer 1

The correct option is D $9.85$

Given, $5,7,12,13,4,6,8,12,9,16,13,12,5,13,7,17,3,9,12,14.$

We know mean $=\frac{\Sigma x}{n}$.
Then, Mean $=\frac{5+7+12+13+4+6+8+12+9+16+13+12+5+13+7+17+3+9+1+2+14}{20}$.
$=\frac{197}{20}=9.85$.

Therefore, the required Mean $=9.85$.

Hence, option $D$ is correct.