15: Graph Qualities: Kurtosis and Skew
Graph Qualities
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- Kurtosis – graphical measure of variability among scores
- a. Leptokurtic
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- Small range with a very peaked mode
- b. Platykurtic
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- Large range with a low mode
- c. Mesokurtic
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- Bell-shaped with gradual slopes
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- Kurtosis – graphical measure of variability among scores
2. Skew – graphical measure of extreme scores
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- a. Negative
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- Extreme scores on the left;the mean is pulled downward
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- b. Positive
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- Extreme scores on the right; the mean is pulled upward
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