### Home > ACC7 > Chapter 7 Unit 4 > Lesson CC2: 7.1.7 > Problem7-82

7-82.

Ms. Poppy has finished grading her students’ tests. The scores were $62$, $65$, $93$, $51$, $55$, $76$, $79$, $85$, $55$, $72$, $78$, $83$, $91$, and $82$.

1. Find the median.

Recall that the median is the middle number of an ordered set of data.

1. Find the quartiles.

Along with the median, the quartiles divide a set of data into four groups of the same size.

$\text{Lower Quartile (Q1)}=62$
$\text{Upper Quartile (Q2)}=83$

1. Find the IQR.

$\text{IQR}=\text{Q3}-\text{Q1}$

1. Find the mean.

Recall that the mean refers to the average of a set of data.