Sind Ihre Daten normalverteilt?


For statistical evaluation a normal distribution of the data is often necessary
and essential. Parametric tests require values like arithmetic mean
and standard deviation (sd) and therefor a normal distribution. They are
often way more precise compared to non-parametric ones. That’s why
one should always check whether the data features a normal distribution.
If that is not the case a robust method is to use only non-parametric tests
but there is also a way to make use of parametric tests. For this purpose,
data transformation can be applied to achieve normality.