Question: John is interested in assessing where college students are most likely to seek out academic support. He predicts differences in support services exist. What test statistic would John employ to test his prediction?

Answer Choices: A. Correlation
B. T-test
C. Chi-square
D. Two-variable chi-square

Answer: D. Two-variable chi-square

 

Question: Veronica collected the following scores for trustworthiness: 3, 5, 7, 3, 9, 8. What is the median?

Answer Choices: A. 6.5
B. 8
C. 6
D. n/a, no median present

Answer: A. 6.5

 

Question: The calculated square root is 4. What is the variance?

Answer Choices: A. 2
B. 16
C. 10
D. The square root of 4

Answer: B. 16

 

Question: Veronica was interested in the relationship between length of friendship (measured in years) and trustworthiness (scale of 1 to 10). What test statistic should Veronica employ?

Answer Choices: A. One-variable chi-square
B. Two-variable chi-square
C. T-test
D. Correlation

Answer: D. Correlation

 

Question: Please indicate the strongest correlation of the values listed below:

Answer Choices: A. .80
B. –.18
C. .18
D. –.81

Answer: D. –.81

 

Question: As a researcher, you want to know the average income of people sitting at a bar. There are 10 people and 9 of them are city workers who make between 60,000 and 120,000 a year. The 10th person is Jeff Bezos, who makes about 2 million a year. If you wanted the most representative way to find the average income of these 10 people, the best statistic to use would probably be the:

Answer Choices: A. Mean
B. Median
C. Mode
D. All of the above are equal

Answer: B. Median

 

Question: ______ examines differences in the distributions of the categories created from two or more nominal independent variables or a nominal independent and dependent variable.

Answer Choices: A. One-variable Chi-Square test
B. Two-variable Chi-Square test
C. T-test
D. Correlation

Answer: B. Two-variable Chi-Square test

 

Question: Through hypothesis testing, researchers aim to confirm or prove their predictions.

Answer Choices: A. True
B. False

Answer: B. False

 

Question: The test statistic used to determine whether the differences between the categories of the nominal independent variable are statistically significant depends on how the independent variable is measured.

Answer Choices: A. True
B. False

Answer: A. True

 

Question: A researcher collects correlation values: .81, .18, –.18, and –.81. What is the coefficient of determination for the strongest correlation coefficient indicated above?

Answer Choices: A. .03
B. –.66
C. .66
D. .64

Answer: C. .66

 

Question: The calculated variance is 25. The standard deviation is:

Answer Choices: A. 125
B. 625
C. 5
D. 15

Answer: C. 5

 

Question: A study examining conflict styles among college students (competition, accommodation, collaborate, avoidance) found preferences in 105 students. Frequencies were: 25, 10, 55, 15. What test statistic is needed?

Answer Choices: A. One-variable chi-square
B. Two-variable chi-square
C. T-test
D. Correlation

Answer: A. One-variable chi-square