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7 Cards in this Set
- Front
- Back
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central tendency
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a sing number that represents what is average or typical of that set of data
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mode
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most frequent value in distribution
only central tendency measurement that can be used for nominal variables |
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bimodal
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have two modes
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median
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the middlemost point in a distribution
n+1 divided by 2 |
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mean
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x bar
sum of the raw scores divided by the total number of scores |
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when are mode, median, and mean the same
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when distribution is perfectly symmetrical
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median is best when
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there are extreme scores on either/both sides
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