Measurement and Methodology-Statistical Procedures (GRE (Graduate Record Examinations) Psychology): Questions 16 - 18 of 21

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Question number: 16

» Measurement and Methodology » Statistical Procedures

MCQ▾

Question

A normal distribution of 2000 scores has a mean of 150 and a standard deviation of 6. Jenny received a 162. Each of the following is true of her score EXCEPT

Choices

Choice (5) Response

a.

approximately 68 % of student scored lower than she did

b.

her score is equivalent to a z-score of + 2

c.

her score is two standard deviations from the mean

d.

approximately 48 % of the total scores lie between her score and the mean

e.

her percentile rank is approximately the 98th percentile

Question number: 17

» Measurement and Methodology » Statistical Procedures

MCQ▾

Question

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.

Inferential statistics

b.

Frequency distributions

c.

Referential statistics

d.

Descriptive statistics

e.

Correlations

Question number: 18

» Measurement and Methodology » Statistical Procedures

MCQ▾

Question

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.

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

c.

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

d.

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

e.

Question does not provide sufficient data or is vague

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