Measurement and Methodology-Statistical Procedures [GRE (Graduate Record Examinations) Psychology]: Questions 17 - 19 of 27

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Question 17

Statistical Procedures

Question

MCQ▾

A researcher has performed an experiment with a random sample. He wants to test his results for statistical significance and then draw conclusions about his population. He should use which of the following type of statistics?

Choices

Choice (5)Response

a.

Descriptive statistics

b.

Inferential statistics

c.

Referential statistics

d.

Correlations

e.

Frequency distributions

Question 18

Statistical Procedures

Question

MCQ▾

An analysis of variance is more appropriate than multiple t tests when analyzing data from multiple group experiments because ________.

Choices

Choice (5)Response

a.

The possibility of rejecting a null hypothesis that is true is more likely using an analysis of variance.

b.

Significant effects are more likely to be found with an analysis of variance.

c.

Multiple t tests in one experiment increase the chance of a Type 1 error.

d.

Doing many t tests increases the chances of Type 2 error.

e.

Question does not provide sufficient data or is vague

Question 19

Statistical Procedures

Question

MCQ▾

The Acme Scale of Aggression has a + 0.10 correlation with four other standardized aggression scales. Also, a correlation of + 1.00 exists between the scores of any student who takes the Acme Scale of Aggression twice. This indicates that the Acme Scale of Aggression has

Choices

Choice (5)Response

a.

low face validity but high reliability

b.

high content validity but low reliability

c.

moderate external validity and moderate reliability

d.

low internal validity but high external validity

e.

low concurrent validity but high reliability