Measurement and Methodology-Statistical Procedures [GRE (Graduate Record Examinations) Psychology]: Questions 11 - 13 of 27

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Question 11

Statistical Procedures

Question

MCQ▾

Mary is using a one-tailed test to evaluate the results of her experiment. Compared with what would happen if she used a two-tailed test, ________.

Choices

Choice (5)Response

a.

Her critical value of t will be more extreme.

b.

There will be no difference.

c.

Her critical value of t will be less extreme.

d.

Her computed value of t will be larger.

e.

Her significance level must be more extreme.

Question 12

Statistical Procedures

Question

MCQ▾

Which of the following statistical tests should the researcher use to analyze her data?

A researcher wants to consider the effects of preparation on standardized test scores. She plans to compare the GRE scores of students who did and did not take a preparation course for the GRE. She also plans to compare the GRE scores of students who took preparation courses though Company X, Company Y, and Company Z.

Choices

Choice (5)Response

a.

2 × 3 factor analysis

b.

Person՚s r correlation coefficient

c.

T-test

d.

Chi-square test

e.

2 × 2 × 2 factor analysis

Question 13

Statistical Procedures

Question

MCQ▾

Which of the following best describes the graph above?

Understanding the Properties of this Graph

Choices

Choice (5)Response

a.

Histogram

b.

Normal distribution

c.

Frequency polygon

d.

Positively skewed distribution

e.

Negatively skewed distribution