Basic statistics
Normality test (Shapiro-Wilk)
Check whether each variable follows a normal distribution before running a t-test or ANOVA.
Data format
Variables in columns with their names in the first row. Each variable needs 3 to 5000 values.
Height, Yield 92.4, 48.2 88.1, 45.6 95.0, 50.3
You get
- Shapiro-Wilk W and p-value for each variable
- A plain verdict: normal or not normal at 5%
Downloads as Excel, PDF and Word.
Enter data
Variable names in the first row, then one row per observation (as in Excel or SPSS). A first column of labels such as P1, P2 is ignored.
or drag and drop here