1). Comparing the two data sets, find all of the measures. Then answer the questions that accompany them. Please show the steps Data Set 1 (Test Scores of Class 1): 95%, 92%, 85%, 89%, 88%, 51% Data Set 2 (Test Scores of Class 2): 90%, 100%, 67%, 99%, 81%, 91% Mean of Data Set 1: Mean of Data Set 2: Median of Data Set 1: Median of Data Set 2: Range of Data Set 1: Range of Data Set 2: Mode of Data Set 1: Mode of Data Set 2: Which class performed better? How did you decide that? Explain and use evidence.

4. Parking at a large university has become a very big problem. University administrators are interested in determining the average parking time (e.g. the time it takes a student to find a parking spot) of its students. An administrator inconspicuously followed 100 students and carefully recorded their parking times. Identify the sample of interest to the university administration. A) parking times of the 100 students B) parking time of a student C) location of the parking spot D) type of car (import or domestic) 5. Classify the variable as qualitative or quantitative: the colors of book covers on a bookshelf A) qualitative B) quantitative 6. (7 pts) Determine the level of measurement of the variable: an officers rank in the military A) ordinal B) ratio C) nominal D) interval 7. Determine whether the following is an observational study or designed experiment. The personnel director at a large company would like to determine whether the company cafeteria is widely used by employees. She calls each employee and asks them whether they usually bring their own lunch, eat at the company cafeteria, or go out for lunch. A) observational study B) designed experiment 8. Determine what type of observational study is explained. Can money buy happiness? A researcher wanted to determine whether there was any association between economic status and happiness. She selected a sample of 1000 adults and interviewed them. Each person was asked about their financial situation and their level of happiness was evaluated. The researcher analyzed the results to determine whether there was an association between economic status and happiness. A) cross-sectional B) cohort C) retrospective 9. Every fifth adult entering an airport is checked for extra security screening. What sampling technique is used? A) systematic B) simple random C) cluster D) stratified

10. Thirty-five math majors, 33 music majors and 45 history majors are randomly selected from 251 math majors, 518 music majors and 332 history majors at the state university. What sampling technique is used? A) stratified B) simple random C) cluster D) systematic 11. Retailers are always interested in determining why a customer selected their store to make a purchase. A sporting goods retailer conducted a customer survey to determine why its customers shopped at the store. The results are shown below. What percentage of the customers responded that the merchandise was the reason they shopped at the store? Round to the nearest whole percent A) 43% B) 30% C) 50% D) 29% 12. true or False. Uniform distribution and symmetric distribution are the same thing. ______________