Measurement and Methodology-Statistical Procedures [GRE (Graduate Record Examinations) Psychology]: Questions 11 - 13 of 27
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Question 11
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
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
Question MCQ▾
Which of the following best describes the graph above?
Choices
Choice (5) | Response | |
---|---|---|
a. | Histogram | |
b. | Normal distribution | |
c. | Frequency polygon | |
d. | Positively skewed distribution | |
e. | Negatively skewed distribution |