Measurement and Methodology-Statistical Procedures [GRE (Graduate Record Examinations) Psychology]: Questions 3 - 6 of 27
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Question 3
Question
MCQ▾The amount of variance in scores accounted for by a correlation coefficient of -. 70 is
Choices
| Choice (5) | Response | |
|---|---|---|
a. | less than zero because the correlation is negative | |
b. | indeterminate because the correlation is negative | |
c. | 14 % if the reliability of the measures is greater than . 70 | |
d. | almost 50 % if the reliability of the measures is + 1.00 | |
e. | 70 % if the reliability of the measures is + 1.00 | |
Question 4
Question
MCQ▾An IQ of 146 is approximately how many standard deviations from the mean?
Choices
| Choice (5) | Response | |
|---|---|---|
a. | 2 | |
b. | 5 | |
c. | 3 | |
d. | 1 | |
e. | 4 | |
Question 5
Question
MCQ▾In a normal frequency distribution, 32 % of the cases
Choices
| Choice (5) | Response | |
|---|---|---|
a. | fall between the mode and the median | |
b. | fall beyond 1 standard deviation above and 1 standard deviation below the mean | |
c. | determine whether the distribution is leptokurtic | |
d. | fall between 1 standard deviation above and 1 standard deviation below the mean | |
e. | fall beyond 2 standard deviations above and 2 standard deviations below the mean | |
Question 6
Question
MCQ▾If the GRE Psychology Subject Test had a standard error of zero, then a test taker that took the test two times would necessarily receive
Choices
| Choice (5) | Response | |
|---|---|---|
a. | two perfect scores | |
b. | two scores that were above the mean | |
c. | two scores that correlated perfectly with the test taker՚s aptitude | |
d. | the same score on each test | |
e. | a score equivalent to a z-score of 1 each time | |