The interquartile range (IQR)represents what percent of the observations?
A) lower 25%
B) middle 50%
C) upper 75%
D) upper 90%
E) 100%

Question

Quizplus · Accepted Answer

The interquartile range (IQR) is defined as the distance between the 25th percentile (Q1) and the 75th percentile (Q3) of a dataset. This means that the IQR includes the middle 50% of the observations, from the lower 25% to the upper 75%. Therefore, the best choice is B, middle 50%.

The Interquartile Range (IQR)represents What Percent of the Observations