Exercise 1 lists the winning times (in seconds) of women in the 100-meter dash for consecutive summer Olympic games.

a. What is the level of measurement of the data? (nominal, ordinal, interval, ratio)

b. Are the values discrete or continuous?

c. Do the values constitute a simple random sample?

d. What important characteristic of the data is not considered when finding the sample statistics indicated in Exercise 1?

e. Which of the following graphs is most helpful in understanding important characteristics of the data: stemplot, boxplot, histogram, pie chart, time series plot, Pareto chart?

11.07   11.08   11.06   10.97   10.54   10.82   10.94   10.75   10.93