DTS: Kurtosis Different from Excel's Computation

StatTools reports kurtosis (3 = normal); Excel `KURT()` gives excess kurtosis (`kurtosis – 3`). Both correct, just different definitions.

Title

Answer

Applies to:
StatTools, all releases
@RISK, all releases

FAQ: StatTools vs. Excel Kurtosis

StatTools calculated 3.72, Excel's KURT() gave 0.72. Both are correct—they just use different definitions.

So in this case:
[
\text{Excess Kurtosis} = 3.72 - 3 = 0.72
]

This also applies to @RISK iteration data: @RISK gives kurtosis; Excel’s KURT() gives excess kurtosis.

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kurtosis-different-from-excels-computation

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