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Cards In This Set
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Psychological measurement can never be as precise as physical measurement because;
a) involves extremely variable measures b) is multidimensional c) Measures intangibles d) include examiner bias whereas physical measurement does not |
C) measures intangibles
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Statistics can enable us to determine whether scores;
a) on a test administered at two different times differ significantly b) on two different tests differ significantly c) are affected by the child's family background d) a and b |
D) a and b
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A(n) __ scale allows for comparative statements such as 'twice as fast' or 'half as well done';
a) interval b) comparative c) ordinal d) ratio |
D) ratio
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__ is an example of a descriptive statistic;
a) a probability measurement b) the t test c) a standard score d) none of the above |
D) none of the above
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The __ is the middle score in a set of scores arranged in order of magnitude;
a) mean b) median c) mode d) range |
B) median
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The __ is an appropriate measure of central tendency for a nominal scale of measurement;
a) maximum b) median c) mode d) mean |
C) mode
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The __ reflects the distance between the highest and lowest scores in a set
a) mean b) median c) mode d) range |
D) range
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Variance measures the;
a) amount of spread in a set of scores b) most frequently occurring scores c) average score d) difficulty level of scores |
A) amount of spread in a set of scores
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When the spread of scores increases, variance;
a) increases b) decreases greatly c) remains the same d) decreases slightly |
A) increases
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The __ is the square root of the __;
a) variance; standard deviation b) variance; mean c) standard deviation; variance d) mean; variance |
C) standard deviation; variance
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Many psychological traits are distributed roughly along a __ curve;
a) normal b) ogive c) t d) inverted bell-shaped |
A) normal
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Correlations can range from;
a) +1 SD to +2 SD b) +1 to -1 c) +2 to -2 d) +1 to 0 |
B) +1 to -1
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A correlation of .80 is considered;
a) low b) moderately low c) moderate d) high |
D) high
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An r of .50 explains __ of the variance
a) 50% b) 5% c) 10% d) 25% |
D) 25%
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Effect size provides a way of evaluating the magnitude of difference between two means independent of the;
a) measurement scale b) test of significance c) numb er of variables d) sample size |
D) sample size
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