Suppose mortgage interest tax deductions average

$8,268 for people with incomes between $50,000 and

$200,000 and $365 for those with incomes of $40,000 to $50,000. Suppose also the standard deviations of the housing benefits in these two categories were equal to

$2,750 and $120, respectively.

a. Examine the two standard deviations. What do these indicate about the range of benefits enjoyed by the two groups?

b. Repeat part a using the coefficient of variation as the measure of relative variation.