### Home > CCA > Chapter A > Lesson A.1.8 > ProblemA-86

A-86.

Mr. Dexter’s teams earned the following scores on a quiz: $15, 20, 19, 20, 16, 20, 14, 18$, and $17$.

1. What is the mean (average score)?

Find the average by adding all of the quiz scores together and then dividing by the number of quizzes that were scored.

2. What is the median (middle score)?

• Start by writing the scores in numerical order from least to greatest.