Quiz 2

What is the value of Σ(X - 2)2 for the following scores? Scores: 1, 4, 1, 2 a. 0 b. 4 c. 6 d. 16

c. 6

The relationship between a statistic and a sample is the same as the relationship between ______________. a. a sample and a population b. a statistic and a parameter c. a parameter and a population d. descriptive and inferential statistics

c. a parameter and a population

This type of descriptive statistic can be used for variables measured at the nominal level. a. mean b. median c. mode d. all of the above

c. mode

The level of measurement for a variable is interval-ratio. Which descriptive statistic is most appropriate? a. mean b. median c. mode d. all of the above

d. all of the above

Organizing a set of scores into a table or graph would be an example of using _______________. a. population statistics b. sample statistics c. inferential statistics d. descriptive statistics

d. descriptive statistics

What is the mode for the following sample of n=8 scores? Scores: 0, 1, 1, 2, 2, 2, 2, 3 a. 2 b. 2.50 c. 1.63 d. 13

a. 2

What is the value of (ΣX)2 for the following scores? Scores: 3, 0, 5, 2 a. 20 b. 100 c. 38 d. 400

b. 100

What is the mean for the following scores? Scores: 1, 4, 5, 10 a. 4 b. 5 c. 10 d. 20

b. 5

What is the median for the following set of scores? Scores: 1, 3, 4, 6, 7, 8, 12, 23 a. 6 b. 6.5 c. 7 d. 8

b. 6.5

A researcher uses an anonymous survey to investigate the study habits of U.S. college students. The entire group of American college students is an example of a(n) ______________________. a. sample b. population c. statistic d. parameter

b. population