Which is true of all skewed distributions?
I. They are is not symmetrical.
II. Their mean and median are not equal.
III. They are characterized by many small values and a few extreme values.
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A. B. C. D.C
A skewed distribution is not symmetrical and its mean and median are not equal. While a positively skewed distribution is characterized by many small values and a few extreme values, the opposite is true of negatively skewed distributions. So III is false as far as "all skewed distributions" are concerned.