Data on the Amount of Money Made in a Year

Multiple Choice

Data on the amount of money made in a year by 1,000 families in a small town were collected. You want to know the difference in the amount of money made in that year by the middle 50% of the 1,000 families. Which of the following would you compute?

A) Arithmetic mean
B) Median
C) Interquartile range
D) Coefficient of correlation