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kurtosis |
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kurtosis [kər′tō·səs] (statistics) The extent to which a frequency distribution is concentrated about the mean or peaked; it is sometimes defined as the ratio of the fourth moment of the distribution to the square of the second moment. 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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