Expressed in percentiles, how is the interquartile range defined?
A) It is the difference between the 20% and 70% values.
B) It is the difference between the 20% and 80% values.
C) It is the difference between the 25% and 75% values.
D) It is the difference between the 45% and 95% values.

Question

Quizplus · Accepted Answer

The interquartile range is defined as the difference between the 25th and 75th percentiles, which correspond to the first and third quartiles of a dataset. Therefore, option C is the correct choice. Option A and D are incorrect as they do not correspond to quartiles, and option B is incorrect as it includes values outside of the interquartile range.

Expressed in Percentiles, How Is the Interquartile Range Defined