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Kurtosis

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Calculates how flat or peaked the data-set is distributed.

Legend

n = n
formula=Mean

Interpretation

>0 the higher the Kurtosis value is the more pointier the curve is.
=0 is normal.
<0 the lower the flatter the curve is.

Data file

What can cause flat or peaked data

  1. The data set is only a part of all the data and all the data outside the tolerance borders is filtered.
  2. Mix of more distributions
  3. With a small sample size the Kurtosis value can not be trusted

How statistically deal with flat or peaked data

See What to do with not normally distributed data.

Formula

formula

External links