Contents

# Z-test

Calculates the z-Test of two data samples.

To access this command...

#### From the menu bar:

Choose Data - Statistics - Z-test

#### From the tabbed interface:

Choose Data - Statistics - Z-test.

On the Data menu of the Data tab, choose Statistics - Z-test.

For more information on Z-tests, refer to the corresponding Wikipedia article.

## Podaci

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.

#### Grouped By

Select whether the input data has columns or rows layout.

#### Primjer

The following table has two data sets.

| A | B
1 | 28 | 19
2 | 26 | 13
3 | 31 | 12
4 | 23 | 5
5 | 20 | 34
6 | 27 | 31
7 | 28 | 31
8 | 14 | 12
9 | 4 | 24
10 | 0 | 23
11 | 2 | 19
12 | 8 | 10
13 | 9 | 33

## Results for z-Test:

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

z-test |  |
Alfa | 0.05 |
Pretpostavljena srednja razlika | 0 |
| Varijabla 1 | Varijabla 2
Poznata varijanca | 0 | 0
Sredina | 16.9230769231 | 20.4615384615
Zapažanja | 13 | 13
Zapažena srednja razlika | -3.5384615385 |
z | #DIV/0! |
P (Z<=z) jednostrana | #DIV/0! |
z kritična jednostrana | 1.644853627 |
P (Z<=z) dvostrana | #DIV/0! |
z kritična dvostrana | 1.9599639845 |

Related Topics

Sampling

Descriptive Statistics

Analysis of Variance (ANOVA)

Correlation

Covariance

Exponential Smoothing

Moving Average

Regression Analysis

Paired t-test

F-test

Z-test

Chi-square test

Fourier Analysis