Activity 3 Statistics 1

ACTIVITY #3 DATA CLASSIFICATION 1. Name each level of measurement for which data can be qualitative . Nominal, Ordinal, Interval. 2. Name each level of measurement for which data can be quantitative. Ordinal, Ratio. True or False? In Exercises 3–6, determine whether the statement is true or false. If it is false, rewrite it as a true statement. 3. Data at the ordinal level are quantitative only. False, the ordinal level is quantitative and qualitative. 4. For data at the interval level, you cannot calculate meaningful differences between data entries. False, data at the interval level can be ordered, and meaningful differences between data entries can be calculated. 5. More types of calculations can be performed with data at the nominal level than with data at the interval level. False, more types of calculations can be performed with data al the internal level than with data at nominal level. 6. Data at the ratio level cannot be put in order. False, Data at the ratio level can be placed in a meaningful order. Classifying Data by Type In Exercises 7–18, determine whether the data are qualitative or quantitative. Explain your reasoning. 7. telephone numbers in a directory Qualitative 8. heights of hot air balloons Quantitative 9. body temperatures of patients Quantitative 10. eye colors of models Qualitative 11. lengths of songs on MP3 player Quantitative 12. carrying capacities of pickups Qualitative 13. player numbers for a soccer team Qualitative 14. student ID numbers Qualitative 15. weights of infants at a hospital Quantitative 16. species of trees in a forest Qualitative 17. responses on an opinion poll Qualitative 18. wait times at a grocery Quantitative Classifying Data by Level In Exercises 19–24, determine whether the data are qualitative or quantitative, and identify the data set’s level of measurement. Explain your reasoning. 19. The top five teams in the final college football poll released in January 2010 are listed. 1. Alabama 2. Texas 3. Florida 4. Boise State 5. Ohio State Qualitative, is ordinal because is a top 5 which is a Ranking. 20. The three political parties in the 111th Congress are listed below. Republican Democrat Independent Qualitative, is nominal because this list is categorized using names. 21. The regions representing the top salespeople in a corporation for the past six years are given. Southeast Northwest Northeast Southeast Southwest Southwest Qualitative, is nominal because is just a list of the top salespeople. 22. The lengths (in inches) of a sample of striped bass caught in Maryland waters are listed. 16 17.25 19 18.75 21 20.3 19.8 24 21.82 Quantitative, is ordinal because these lengths can be arranged. 23. The top five hardcover nonfiction books on The New York Times Best Seller List on January 19, 2010, are shown. 1. Committed 2. Have a Little Faith 3. The Checklist Manifesto 4. Going Rogue 5. Stones Into Schools Qualitative, is ordinal because is a ranking. 24. The average ticket prices for 10 Broadway shows in 2009 are listed. $149 $128 $124 $91 $96 $106 $112 $95 $86 $74 Qualitative, is nominal because is just a list of prizes. Graphical Analysis In Exercises 25–27, identify the level of measurement of the data listed on the horizontal axis in the graph. Ordinal Ratio Nominal 28. The following items appear on a physician’s intake form. Identify the level of measurement of the data. a. Temperature Ratio b. Allergies Nominal c. Weight Ratio d. Pain level (scale of 0 to 10) Interval 29. The following items appear on an employment application. Identify the level of measurement of the data. a. Highest grade level completed Ordinal b. Gender Nominal c. Year of college graduation Nominal d. Number of years at last job Ratio