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Quantitative Methods PSY302 Quiz Chapter Five-Correlation
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1. A ____ shows the relationship between two quantitative variables. (p. 83)
histogram scatterplot five-number summary independent variable block design
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1. A ____ shows the relationship between two quantitative variables. (p. 83)
histogram scatterplot five-number summary independent variable block design
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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
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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
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3. Correlation describes ____ relationships. (p. 91)
linear causal nominal categorical curved
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3. Correlation describes ____ relationships. (p. 91)
linear causal nominal categorical curved
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3. Correlation describes ____ relationships. (p. 91)
linear causal nominal categorical curved
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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
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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
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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
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6. The scatterplot on the right shows a _____ relationship between carnivore abundance and body mass. (p. 85) curvilinear causal nominal categorical negative
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6. The scatterplot on the right shows a _____ relationship between carnivore abundance and body mass. (p. 85) curvilinear causal nominal categorical negative
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7. To calculate correlation you need the: (p. 88)
mean median standard deviation range A & C
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7. To calculate correlation you need the: (p. 88)
mean median standard deviation range 1 & 3
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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
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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
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9. Which of the following is the strongest correlation? (p. 83)
.25 .54 -.32 -.89 .772
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9. Which of the following is the strongest correlation? (p. 83)
.25 .54 -.32 -.89 .772
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10. Correlation requires that both variables be:
positive nominal quantitative even categorical
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10. Correlation requires that both variables be:
positive nominal quantitative even categorical
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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
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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
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The End
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1-b, 2-d, 3-a 4-d, 5-c, 6-e, 7-e, 8-b, 9-d, 10-c
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