11. To answer the question, refer to the following list of raw data.

63, 71, 72, 77, 77, 78, 86, 77, 88, 88

What is the mean for the data?

A. 77.5

B. 77

C. 88

D. 77.7

12. Which type of plot takes quantitative data and forms classes out of it, thus turning it into qualitative

data?

A. Dot plot

B. Pie chart

C. Stem-and-leaf plot

D. Histogram

13. Consider the following chart:

Which of the measures of central tendency would best represent that data?

A. Median

B. Mean

C. Standard deviation

D. Mode

14. Which of the following statements is true about a stem-and-leaf plot?

A. It uses vertical bars to illustrate a probability distribution.

B. Stem-and-leaf plots are histograms whose bars have been arranged in decreasing order of frequency.

C. It separates data at the decimal point, creating horizontal rows whose values are close together.

D. It involves creating columns of dots, one for each datum in the sample.

15. Given the data set 3, 6, 2, 9, 1, 0, compute (x + 1)2.

A. 137

B. 25

C. 625

D. 175

16. Which of the following involves inferential statistics as opposed to descriptive statistics?

A. The Alcohol, Tobacco and Firearms department reported that Houston had 1,791 registered gun dealers in 1997.

B. A class of 50 statistics students earned an average grade of 73.5.

C. A local cable system, using a sample of 500 subscribers, estimates that 40 percent of its subscribers watch a premium channel

at least once per day.

D. The city business office reported 35 building permits for new single-family housing units.