By Barbara Illowsky, Susan Dean
Booklet via Illowsky, Barbara, Dean, Susan
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A. Population b. Sample c. Parameter d. Statistic e. Variable f. 5 (Solution on p. ) Ski resorts are interested in the average age that children take their first ski and snowboard lessons. They need this information to optimally plan their ski classes. Define the following in terms of the study. Give examples where appropriate. a. Population b. Sample c. Parameter d. Statistic e. Variable f. 6 A cardiologist is interested in the average recovery period for her patients who have had heart attacks.
__________ 15. 10/>. 4 A Stratified Sample Pick a stratified sample, by entree cost, of 20 restaurants with equal representation from each stratum. 1. Descibe the procedure: 2. 1. __________ 6. __________ 11. __________ 16. __________ 2. __________ 7. __________ 12. __________ 17. __________ 3. __________ 8. __________ 13. __________ 18. __________ 4. __________ 9. __________ 14. __________ 19. __________ 5. __________ 10. __________ 15. __________ 20. 5 A Stratified Sample Pick a stratified sample, by city, of 21 restaurants with equal representation from each stratum.
You can find additional instructions for using these calculators on the Texas Instruments (TI) website4 . 4 Histograms5 For most of the work you do in this book, you will use a histogram to display the data. One advantage of a histogram is that it can readily display large data sets. A rule of thumb is to use a histogram when the data set consists of 100 values or more. A histogram consists of contiguous boxes. It has both a horizontal axis and a vertical axis. The horizontal axis is labeled with what the data represents (for instance, distance from your home to school).