Quantitative Methods PSY302Quiz Chapter Five

1. A ____ shows the relationship between two quantitative variables. (p. 83)

A. histogram

B. scatterplot

C. five-number summary

D. independent variable

E. block design

1. A ____ shows the relationship between two quantitative variables. (p. 83)

A. histogram

B. scatterplot

C. five-number summary

D. independent variable

E. block design

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

A. categoricalB. independentC. above-averageD. below-averageE. hypothetical

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

A. categoricalB. independentC. above-averageD. below-averageE. hypothetical

3. Correlation describes ____ relationships. (p. 91)

A.linearB.causalC.nominal D.categoricalE.curved

3. Correlation describes ____ relationships. (p. 91)

A. linearB. causalC. nominal D. categoricalE. curved

3. Correlation describes ____ relationships. (p. 91)

A. linearB. causalC. nominal D. categoricalE. curved

4. A correlation is always: (p. 81)

A. computed with categorical dataB. greater than zeroC. ellipticalD. a number between 1 and –1.E. used with curved data

4. A correlation is always: (p. 81)

A. computed with categorical dataB. greater than zeroC. ellipticalD. a number between 1 and –1.E. used with curved data

5. Which of the following is a variable that could be used in calculating a correlation. (p. 91)

A. cityB. class rankC. G.P.A.D. raceE. all of the above

6. The scatterplot on the right shows a _____ relationship between carnivore abundance and

body mass. (p. 85)

A. curvilinear B. causalC. nominalD. categoricalE. negative

6. The scatterplot on the right shows a _____ relationship between carnivore abundance and

body mass. (p. 85)

A. curvilinear B. causalC. nominalD. categoricalE. negative

7. To calculate correlation you need the: (p. 88)

A. meanB. medianC. standard deviationD. rangeE. 1 & 3

7. To calculate correlation you need the: (p. 88)

A. meanB. medianC. standard deviationD. rangeE. 1 & 3

8. We have to be cautious using correlation when ____ because it may present an incorrect

picture.

A. it is based on quantitative dataB. there are outliersC. it is negativeD. the data are normalE. all of the above

8. We have to be cautious using correlation when ____ because it may present an incorrect

picture.

A. it is based on quantitative dataB. there are outliersC. it is negativeD. the data are normalE. all of the above

9. Which of the following is the strongest correlation? (p. 83)

A. .25

B. .54

C. -.32

D. -.89

E. .772

))((1

1

yx s

yy

s

xx

nr

9. Which of the following is the strongest correlation? (p. 83)

A. .25

B. .54

C. -.32

D. -.89

E. .772

))((1

1

yx s

yy

s

xx

nr

10. Correlation requires that both variables be:

A.positiveB.nominalC.quantitativeD.evenE.categorical

10. Correlation requires that both variables be:

A.positiveB.nominalC.quantitativeD.evenE.categorical

11. Correlations express the association that exists between two or more variables; they have nothing

to do with _____.

A. Relationships

B. Shared variance

C. Causality

D. Measurement variables

E. All of the above

11. Correlations express the association that exists between two or more variables; they have nothing

to do with _____.

A. Relationships

B. Shared variance

C. Causality

D. Measurement variables

E. 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