Answer
$Q_{1} = 21\\
Q_{2} = 22.5\\
Q_{3} = 24$
IQR = 3
Outliers = 29
Work Step by Step
Sort the data in ascending order
Middle value is Median and Q2 or 50% of the data
Middle value of the values below Q2 will be Q1 or 25% of the data
Middle value of the values above Q2 will be Q3 or 75% of the data
Values above 1.5 IQR + Q3 will be outliers
