The width of the middle 50% of a distribution,defined as the difference between the third and first quartiles,is referred to as the
A)interquartile range.
B)range.
C)standard deviation.
D)variance.

Question

Quizplus · Accepted Answer

The width of the middle 50% of a distribution, defined as the difference between the third and first quartiles, is referred to as the interquartile range (IQR). This is a measure of dispersion that focuses on the spread of the middle 50% of the data, and is more robust to outliers than the range, standard deviation, or variance.

The Width of the Middle 50% of a Distribution,defined as the Difference