Quantitative Methods PSY302 Quiz Chapter Five-Correlation

1. A ____ shows the relationship between two quantitative variables. (p. 83) histogram scatterplot five-number summary independent variable block design

1. A ____ shows the relationship between two quantitative variables. (p. 83) histogram scatterplot five-number summary independent variable block design

2. When two variables are negatively correlated, above-average values of one variable tend to accompany ____ values of the other. (p. 88) categorical independent above-average below-average hypothetical

2. When two variables are negatively correlated, above-average values of one variable tend to accompany ____ values of the other. (p. 88) categorical independent above-average below-average hypothetical

3. Correlation describes ____ relationships. (p. 91) linear causal nominal categorical curved

3. Correlation describes ____ relationships. (p. 91) linear causal nominal categorical curved

3. Correlation describes ____ relationships. (p. 91) linear causal nominal categorical curved

4. A correlation is always: (p. 81) computed with categorical data greater than zero elliptical a number between 1 and –1. used with curved data

4. A correlation is always: (p. 81) computed with categorical data greater than zero elliptical a number between 1 and –1. used with curved data

5. Which of the following is a variable that could be used in calculating a correlation. (p. 91) city class rank G.P.A. race all of the above

6. The scatterplot on the right shows a _____ relationship between carnivore abundance and body mass. (p. 85) curvilinear causal nominal categorical negative

6. The scatterplot on the right shows a _____ relationship between carnivore abundance and body mass. (p. 85) curvilinear causal nominal categorical negative

7. To calculate correlation you need the: (p. 88) mean median standard deviation range A & C

7. To calculate correlation you need the: (p. 88) mean median standard deviation range 1 & 3

8. We have to be cautious using correlation when ____ because it may present an incorrect picture. it is based on quantitative data there are outliers it is negative the data are normal all of the above

8. We have to be cautious using correlation when ____ because it may present an incorrect picture. it is based on quantitative data there are outliers it is negative the data are normal all of the above

9. Which of the following is the strongest correlation? (p. 83) .25 .54 -.32 -.89 .772

9. Which of the following is the strongest correlation? (p. 83) .25 .54 -.32 -.89 .772

10. Correlation requires that both variables be: positive nominal quantitative even categorical

10. Correlation requires that both variables be: positive nominal quantitative even categorical

11. Correlations express the association that exists between two or more variables; they have nothing to do with _____. Relationships Shared variance Causality Measurement variables All of the above

11. Correlations express the association that exists between two or more variables; they have nothing to do with _____. Relationships Shared variance Causality Measurement variables All of the above

The End

1-b, 2-d, 3-a 4-d, 5-c, 6-e, 7-e, 8-b, 9-d, 10-c