Here are the correct definitions for each keyword:
Range:
- A. The difference between the lowest and the highest number in a data set.
Interquartile Range (IQR):
- C. One possible measure of spread, based on dividing a dataset into four parts. The values that divide each part are called the first quartile (Q1), the median, and third quartile (Q3). IQR is calculated as Q3 minus Q1.