Multiple Choice Questions in General Mathematics

Data Analysis

Question 3.

A group of students scored the following marks in a math's test. The marks are listed in ascending order.
42, 48, 54, 54, 62, 65, 72, 73, 79, 82, 88, 93
What is the interquartile range of these scores.

A. 11
B. 21
C. 25
D. 51