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标题: positively skewed?? [打印本页]

作者: towardsutopia21    时间: 2011-7-13 16:41     标题: positively skewed??

the book says positively skewed has more outliers on upper right tail - but actually there is less curve area after mean - how come more outlier towards right?

what am I missing here?
作者: kd26gioi    时间: 2011-7-13 16:41

It has a long tail on right side, fig in the books are not drawn to exact specifications. mean> median, more then half of the deviations from the mean are negative and less than half are positive. In order the sum to be positive, losses must be small and gains must be large. Average magnitude of positive deviation> average magnitude of negative deviations.




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