A set of data has a lower quartile of 22 and an upper quartile of 27. Which of the following values could be an outlier?
a. 15 b. 22 c. 24.5 d. 29 e. 35
IQR = 27 – 22
= 5
lower limit = 22 – 1.5 × 5
= 14.5
upper limit = 22 + 1.5 × 5
= 29.5
E is outlier as it is higher than the upper limit of 29.5