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kurtosis |
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kurtosis [kerto′sis] the degree of peakedness or flatness of a probability distribution relative to the normal distribution with the same variance. kurtosis the quality of peakedness in a unimodal distribution. Abnormalities are leptokurtosis where values are clustered about the mean and the tails of the curve, and platykurtosis where the clustering produces a plateau-shaped curve. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Finally, given the known skew and kurtosis of some items, the Satorra-Bentler Scaled Chi-Square Statistic (S-B[chi square]) and its associated fit index, the Robust Comparative Fit Index (RCFI), were used (Satorra & Bentler, 1988). Means, standard deviations, Cronbach's alphas, skewness, and kurtosis for these scales are also reported in Table 1. The pretest and posttest measures for critical thinking were examined for normality by using skewness and kurtosis coefficients (z-tests of greater or less than 1. |
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