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8 Cards in this Set
- Front
- Back
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frequency distribution
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an organized tabulation of the number of individuals located in each category on the scale of measurement
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symmetrical distribution
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it is possible to draw a vertical line through the middle so that one side of the distribution is a mirror image of the other (Figure 2.11)
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skewed distribution
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the scores tend to pile up toward one end of the scale and taper off gradually at the other end (Figure 2.11)
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tail of the distribution
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the section where the scores taper off toward one end of a distribution
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positively skewed distribution
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the tail is on the right side; it points toward the positive end of the x-axis
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negatively skewed distribution
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the tail is on the left side; it points toward the negative end of the x-axis
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rank / percentile rank of a score
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the percentage of individuals in the distribution with scores at or below the particular value
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percentile
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what a score is called when it is identified by its percentile rank
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