Z-test

Calculates the z-Test of two data samples.

แƒ‘แƒ แƒซแƒแƒœแƒ”แƒ‘แƒแƒ–แƒ” แƒฌแƒ•แƒ“แƒแƒ›แƒ˜แƒกแƒแƒ—แƒ•แƒ˜แƒก...

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.


แƒจแƒ”แƒœแƒ˜แƒจแƒ•แƒœแƒ˜แƒก แƒฎแƒแƒขแƒฃแƒšแƒ

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


แƒ›แƒแƒœแƒแƒชแƒ”แƒ›แƒ”แƒ‘แƒ˜

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.

Open file with example:

แƒ›แƒแƒ’แƒแƒšแƒ˜แƒ—แƒ˜

The following table has two data sets.

ย 

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-แƒจแƒ”แƒ›แƒแƒฌแƒ›แƒ”แƒ‘แƒ

แƒแƒšแƒคแƒ

0.05

Hypothesized Mean Difference

0

Variable 1

Variable 2

Known Variance

0

0

แƒกแƒแƒจแƒฃแƒแƒšแƒ

16.9230769231

20.4615384615

แƒ“แƒแƒ™แƒ•แƒ˜แƒ แƒ•แƒ”แƒ‘แƒ”แƒ‘แƒ˜

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


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