### Home > INT3 > Chapter Ch1 > Lesson 1.2.2 > Problem1-81

1-81.

Use the data set below to complete parts (a) and (b).

Lengths of earthworms (cm): $4.0, 5.0, 5.8, 7.1, 7.8, 8.1, 8.2, 8.3, 8.4, 11.9, 12.0$.

1. What is the interquartile range for the data?

What is the median?

What is the median of the right set of values?
What is the median for the left? Those are the interquartiles.

$2.6$ cm

2. Make a boxplot of the data.

Set the ends of the box at the first and third quartiles; add line 3: do not forget to add line segments to the extremes.