What do the quartile deviation and the interquartile range d

What do the quartile deviation and the interquartile range describe?

            A)        Lower 50% of the observations

            B)        Middle 50% of the observations

            C)        Upper 50% of the observations

            D)        Lower 25% and the upper 25% of the observations

            E)         None of the above

Solution

The inter-quartile range is a measure that indicates the extent to which the central 50% of values within the dataset are dispersed. It is based upon, and related to, the median.

            B)        Middle 50% of the observations