Which of the following are true for the interquartile range (IQR) of a data set? Choose all that apply. A. middle 50% of the data

B. represented by the rectangle box on a box plot

C. 100% of the data

D. upper 25% of the data

E. represented by the whiskers on the box plot

F. Quartile 3 - Quartile 1

G. measure of variability (spread) of data set

H. based on median of data, lower quartile, and upper quartile

I. measure of center for data set