Answer
Minimum = 14.6
Maximum = 19.8
Median = 16.3
Q1 = 15.05
Q3 = 19
IQR = 3.95
Work Step by Step
Arranging the values in ascending order, we have:
Minimum = 14.6
Maximum = 19.8
Median is the middle value=16.3
$Q_{1}$ is the median of values below median or at 25% of values, hence:
$Q_{1}$ = (14.6+15.5)/2 = 15.05
$Q_{3}$ is the median of values above median or at 75% of values, hence:
$Q_{3}$ = (18.2+19.8)/2 = 19
IQR = $Q_{3} - Q_{1} = 19-15.05 = 3.95$
