=+56. Mutual funds, historical. Here is an ogive of the distribution of monthly returns for a group of aggressive (or high growth) mutual funds over a period of 25 years. (Recall from Exercise 55 that an ogive, or cumulative relative frequency graph, shows the percent of cases at or below a certain value. Thus this graph always begins at 0% and ends at 100%.)

80 100 60 Cumulative Percent 40 20 0

−20 −10 0 Mutual Fund Returns (%)

10 20

a) Estimate the median.

b) Estimate the quartiles.

c) Estimate the range and the IQR.