Measures of Univariate Kurtosis Spreadsheet

Kurtosis.  This is the standard measure of univariate skewness.  For normally distributed data, it should be zero in the population.

Corrected Kurtosis.  This is a bias-corrected measure of univariate kurtosis.

Normalized Skewness.  This is a sample based estimate which, under multivariate normality, has approximately a standard normal distribution with large samples.  This measure may be evaluated roughly like any other standard normal statistic.