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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...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.