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14 Cards in this Set
- Front
- Back
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Eight test-takers obtain the following scores on a psychological test: 106, 120, 108, 120, 118, 60, 95, 102. The median score on the psychological test is: |
107 |
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If a test has a mean of 500 and standard deviation of 100 (assuming a normal distribution). With N = 1000, about how many individuals score between 400 and 600? |
680 |
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The variability in a group of test scores can be described using the range, the variance, and the standard deviation. What is the relationship between the variance and the standard deviation? |
One can be computed from the other. |
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In a normal distribution of test scores, approximately _____ percent of the scores will fall within one standard deviation of the mean in either direction. |
68 |
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Raw scores on a test can be transformed into z-scores. A group of z-scores always possesses a mean of _____ and a standard deviation of _____. |
0.0, 1.0. |
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Mental tests often require standardisation samples to be collected. The distribution of mental test scores in standardisation samples typically: |
approximate a normal curve |
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Several test takers have just taken a test designed to measure the tendency to be envious of others, called the “Green test”. On the Green test, higher scores indicate a greater tendency to experience envy. The test manual indicates that the original sample distribution (which conformed to the normal distribution) had a raw score of mean 20 and standard deviation of 2.Daniel’s percentile rank on the Green Test was 50. Therefore, his raw score was: |
20 |
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The mean, median, and mode of a set of test scores are measures of: |
central tendency |
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Which of the following is not an index of dispersion (or variability) of a set of test scores? |
the mean |
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The simplest (but crudest) measure of variability is the: |
range |
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Suppose you are in the 87th percentile on a test. This means: |
87% of the students got a score lower than your score. |
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In a normal distribution of test scores, about what percentage of cases have scores above a standard score of -1.00? |
84%. |
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Suppose a group of scores has a mean of 40 and a standard deviation of 10. A score of 80 would equate to a standard score of: |
4.0 |
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Suppose that a test taker earned 125 raw score points on a vocabulary test where the normative sample averaged 100 points (with SD of 15 points). Suppose, in addition, he earned 110 raw score points on a spatial thinking test where the normative sample averaged 90 points (with SD of 20 points). In which skill area does he show greater aptitude, vocabulary or spatial thinking? |
vocabulary |
