Central tendency describes the central location of the set of scores.
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Central tendency and variability are synonymous.
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The median is most affected by unbalanced extreme scores.
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The overall mean is a weighted mean.
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The median and the 50th percentile rank score will always have the same value.
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It is possible to have a set of scores with three different values for central tendency.
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The mode is used extensively in the behavioral sciences.
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The overall mean does not take into account the different number of subjects in each group.
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Stem and leaf diagrams are like histograms, except that they lose the original scores.
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The lower limit in the lowest class interval should equal i.
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