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According to the text, the ________ measures the linear association between two metric variables.


A) regression analysis coefficient
B) covariance coefficient
C) analysis of variance coefficient
D) product moment correlation coefficient
E) F-statistic

F) None of the above
G) A) and E)

Correct Answer

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A(n) ________ of sample variance may be performed if it is not known whether the two populations have equal variance.


A) p-test
B) F-test
C) t-test
D) z-test
E) chi-square test

F) None of the above
G) D) and E)

Correct Answer

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According to the text, the ________ can be conducted on the means of one sample or two samples of observations.


A) F-test
B) p-test
C) t-test
D) z-test
E) k-means test

F) A) and D)
G) B) and D)

Correct Answer

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A test for differences in the means of paired samples is called the ________.


A) paired samples t-test
B) paired samples F-test
C) paired samples p-test
D) paired samples z-test
E) paired samples ratio test

F) B) and E)
G) A) and B)

Correct Answer

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A test for differences in the means of paired samples is called the paired samples t-test.

A) True
B) False

Correct Answer

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In multiple regression, the strength of association is measured by the square of the multiple correlation coefficient, which is called the coefficient of multiple determination.

A) True
B) False

Correct Answer

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The two sets of degrees of freedom in which the F distribution depends on are the degrees of freedom in the ________ and the degrees of freedom in the ________.


A) sample; questionnaire
B) numerator; denominator
C) variance; standard deviation
D) t-test; F-test
E) matrix; contingency table

F) D) and E)
G) A) and D)

Correct Answer

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According to the text, the beta coefficient is also called the beta weight.

A) True
B) False

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The multiple correlation coefficient, R, can also be viewed as the simple correlation coefficient, r, between Y and Ŷ.

A) True
B) False

Correct Answer

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Non-parametric tests are hypothesis testing procedures that assume the variables of interest are measured on at least an interval scale.

A) True
B) False

Correct Answer

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Two samples that are not experimentally related are called dependent samples.

A) True
B) False

Correct Answer

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The strength of association is measured by the ________.


A) coefficient of determination
B) regression equation
C) correlation coefficient
D) F factor
E) F-statistic

F) A) and C)
G) B) and C)

Correct Answer

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________ are hypothesis testing procedures that assume the variables of interest are measured on at least an interval scale.


A) Non-parametric tests
B) Parametric tests
C) Parallel tests
D) Regression tests
E) Interval tests

F) C) and D)
G) A) and C)

Correct Answer

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According to the text, the beta coefficient is also called the ________.


A) beta factor
B) beta variable
C) beta element
D) beta weight
E) beta carotene

F) D) and E)
G) All of the above

Correct Answer

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