The shoe sizes of a group of middle school girls are shown
5.5, 6, 7, 8.5, 6.5, 6.5, 8, 5.
If a shoe size of 8 is added to the data, how does the IQR change.
A. The IQR becomes a 3.
B. The IQR remains a 2.5.
C. The IQR remains a 2.
D. The IQR becomes a 1.5.
WORTH 15 POINT