# Prova Z

Calculates the z-Test of two data samples.

Per a accedir a aquesta ordre...

Choose Data - Statistics - Z-test

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.

#### Agrupat per

Select whether the input data has columns or rows layout.

#### Exemple

La taula següent conté dos conjunts de dades.

 A B 28 19 26 13 31 12 23 5 20 34 27 31 28 31 14 12 4 24 0 23 2 19 8 10 9 33

## Results for z-Test:

The following table shows the z-Test for the data series above:

 Prova z Alfa 0.05 Hypothesized Mean Difference 0 Variable 1 Variable 2 Known Variance 0 0 Mean 16.9230769231 20.4615384615 Observacions 13 13 Observed Mean Difference -3.5384615385 z #DIV/0! P (Z<=z) one-tail #DIV/0! z Critical one-tail 1.644853627 P (Z<=z) two-tail #DIV/0! z Critical two-tail 1.9599639845

Ens cal la vostra ajuda!