Health Insurance the World Almanac and Book of Facts 2004

Essay

Health insurance The World Almanac and Book of Facts 2004 reported the percent of people not covered by health insurance in the 50 states and Washington, D.C., for the year 2002. Computer output gives these summaries for the percent of people not covered by health insurance: $\begin{array}{|c|c|c|c|c|c|c|}\hline \text { Min } & \text { Q1 } & \text { Median } & \text { Q3 } & \text { Max } & \text { Mean } & \text { SD } \\\hline 7.9 & 10.8 & 13.4 & 16.7 & 25.8 & 13.9 & 3.6 \\\hline\end{array}$

a. Were any of the states outliers? Explain how you made your decision.
b. A histogram of the data is as follows:


Is it more appropriate to use the mean and standard deviation or the median and IQR to
describe these data? Explain.