**Uncorrected
univariate kurtosis. **For variable xj, this index
is defined as

(175)

The uncorrected estimate is biased. The following
*corrected univariate kurtosis *is an unbiased estimate when the
distribution is normal.

**Corrected
univariate kurtosis. **This index is defined as

(176)

where

(177)

and

(178)

The asymptotic variance of these measures is
24/*N*, which is used to standardize the uncorrected kurtosis to
produce the "normalized" kurtosis printed by the program.