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Multiple-Choice Quiz
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1
Which statistic summarizes the strength of association between two continuous interval or ratio variables?
A)regression analysis
B)partial correlation coefficient
C)ANOVA
D)product moment correlation
E)gamma
2
Researcher Thuy is selecting a measure to determine the correlation between nonparametric measures. She should choose _____.
A)Pearson product moment correlation
B)Bivariate linear regression
C)Kendall's tau
D)Partial correlation
E)all of the above
3
It is possible for a correlation coefficient of .09 to be statistically significant when _____.
A)the variables have a positive covariance
B)the variables have a negative covariance
C)the sample is large
D)the sample is small
E)it is meaningful
4
For each 1-unit change in X, the change in Y measures the _____.
A)regression coefficient
B)slope
C)intercept
D)constant
E)error term
5
What is the appropriate test statistic to use to determine the significance of the coefficient of determination in a bivariate regression?
A)F statistic
B)Z score
C)X2
D)ANOVA
E)t
6
Researcher Thomas is measuring association for nominal, nonparametric variables. He should NOT use ______.
A)chi-square
B)phi
C)Cramer's V
D)contingency coefficient C
E)Z score
7
Proportional reduction in error statistics are used with _____.
A)interval data
B)ratio data
C)regression analysis
D)nominal data
E)all of the above
8
When concordant/discordant pairs relationship is tested with Spearman's rank-order correlation and the value is -1.0, the relationship is _____.
A)inverse
B)positive
C)negative
D)weak
E)strong
9
What occurs when participants have the same value on the X variable?
A)correlation
B)resistant statistic
C)tied pairs
D)proportional reduction in error
E)positive relationship
10
Sandra is analyzing a data set of rankings. Three judges have evaluated a set of wines and Sandra must assess how well the judges' rankings agree. Which statistic should Sandra use?
A)r2
B)φ
C)ρ
D)λ
E)X2





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