Axuda do LibreOffice 25.2
Calculates the z-Test of two data samples.
For more information on Z-tests, refer to the corresponding Wikipedia article.
Variable 1 range: The reference of the range of the first data series to analyze.
Variable 2 range: The reference of the range of the second data series to analyze.
Results to: The reference of the top left cell of the range where the test will be displayed.
The following table shows the z-Test for the data series above:
| Test z | ||
| Alfa | 0.05 | |
| Diferenza de media hipotética | 0 | |
| Variábel 1 | Variábel 2 | |
| Varianza coñecida | 0 | 0 | 
| Media | 16.9230769231 | 20.4615384615 | 
| Observacións | 13 | 13 | 
| Diferenza media observada | -3.5384615385 | |
| z | #DIV/0! | |
| P (Z<=z) unilateral | #DIV/0! | |
| z Crítico unha cola | 1.644853627 | |
| P (Z<=z) dúas colas | #DIV/0! | |
| z Crítico dúas colas | 1.9599639845 |