Question

1. the quiz scores of eight students are 12 points, 18 points, 20 points, 15 points, 18 points, 15 points, 16 points, and 14 points. find the mean quiz score of the eight students.

Explanation:

Step1: Find the sum of scores

$12 + 18+20 + 15+18+15+16+14$
$=(12 + 18)+20+(15 + 15)+(18+14)+16$
$=30+20 + 30+32+16$
$=50+30+32+16$
$=80+32+16$
$=112+16$
$=128$

Step2: Divide by number of students

The number of students is 8. Mean = $\frac{128}{8}=16$

Answer:

16