Data Set 25 “Fast Food” in Appendix B includes lunch and dinner drive-through service times at McDonald’s, Burger King, Wendy’s, and Dunkin’ Donuts restaurants. Several examples and exercises in this chapter use some of those service times. For this project, use all of the service times.

Data Set 23: Old Faithful 

Data are from 250 eruptions (first five rows shown here) of the Old Faithful geyser in Yellowstone National Park. INT BEFORE is the time interval (min) before the eruption, DURATION is the time (sec) of the eruption, INT AFTER is the time interval (min) after the eruption, HEIGHT (ft) is the height of the eruption, and PRED ERROR is the error (min) of the predicted time of eruption. Based on data from the Geyser Observation and Study Association.