Answer
a. $Q1=12$, $Q2=20$, $Q3=32$, Midquartile=$22$, $IQR=20$
b. $Q1=62$, $Q2=94$, $Q3=99$, Midquartile=$80.5$, $IQR=37$
Work Step by Step
find Q1, Q2, Q3, the midquartile, and the interquartile range
a. 5, 12, 16, 25, 32, 38
$Q1=12$, $Q2=(15+25)/2=20$, $Q3=32$, Midquartile=$(12+32)/2=22$, $IQR=32-12=20$
b. 53, 62, 78, 94, 96, 99, 103
$Q1=62$, $Q2=94$, $Q3=99$, Midquartile=$(62+99)/2=80.5$, $IQR=99-62=37$