Question

The cost of tents on sale at a sporting goods store are

$66, $72, $78, $69, $64, $70, $67, $72, and $66. Use the range and
interquartile range to describe how the data vary.

Answer 1

Answer: The range of the data set tells us how much the costs of tents on sale at the store vary overall, while the IQR tells us how much the middle 50% of the data varies. In this case, the range is relatively large ($14), indicating that the cost of tents on sale varies quite a bit. However, the IQR is relatively small ($6), indicating that the middle 50% of the data varies only slightly.