Recent crime reports on the number of aggravated assaults at each of the 27 largest universities reporting for the year are summarized in the computer output.

Descriptive Statistics: AggAslt Variable N Mean Median StDev AggAslt 27 10.30 10.00 7.61 Variable Minimum Maximum Q1 Q3 AggAslt 0.00 29.00 5.00 14.00

(a) Locate a measure of variation and also calculate the sample variance.

(b) Calculate the interquartile range and interpret this value.

(c) Give a value for a standard deviation that would correspond to greater variation in the numbers of aggravated assaults.