Definition Of Kurtosis In Statistics. Kurtosis is a measure of whether the data are heavy-tailed or light-tailed relative to a normal distribution. What are the different formulas used and which packages use which formula.
Calculation is bias-corrected and at least four values per group are required. Data sets with low kurtosis tend to have light tails or lack of outliers. Kurtosis Kurtosis refers to the degree of peakedness of a frequency curve.
Kurtosis is typically measured with respect to the normal distribution.
What are the different formulas used and which packages use which formula. It tells how tall and sharp the central peak is relative to a standard bell curve of a distribution. Kurtosis is a statistical measure used to describe the degree to which scores cluster in the tails or the peak of a frequency distribution. If the latter does not hold a missing cell is returned Its not clear what type of bias-correction is used and if this correction is on standard or excess kurtosis or is in fact the calculation for the latter.
