6.1.3. Parametric Tests Matrix
This procedure will compute the four most commonly used Parametric Tests (pooled and separate variance t-tests and classical and Levene’s F-Tests) for all pairs of selected variables.
The Variable Selection Dialogue is of the multisample type (see 6.0.4. Multisample Tests), allowing selection of multiple variables and factors. It is possible to perform tests between variables in separate columns, as well as between the groups defined by levels of factor columns.
The output is in the form of a matrix in each cell of which the test statistic, its degrees of freedom and the tail probability are displayed for up to four tests. The tests to be performed can be selected from the Output Options Dialogue.
In earlier versions of UNISTAT, two-tailed probabilities were reported for t-tests and one-tail probability for the F-test. As of this version, you can choose to display one- or two-tailed probabilities for all test statistics.
Example
Open DEMODATA and select Statistics 1 → Parametric Tests → 6.1.3. Parametric Tests Matrix. Select Wages, Energy, Interest and Fixed capital (C2 to C5) as [Variable]s and check all three options at the Output Options Dialogue to obtain the following results:
Parametric Tests Matrix
|
|
Wages |
|
|
Energy |
|
|
|
|
Test |
DoF |
2-Tail P |
Test |
DoF |
2-Tail P |
|
Wages t-Pl |
|
|
|
0.3079 |
112.0000 |
0.7588 |
|
t-Sp |
|
|
|
0.3079 |
110.5460 |
0.7588 |
|
F- |
|
|
|
1.2591 |
56.0000 |
0.1957 |
|
F-Lv |
|
|
|
1.9049 |
56.0000 |
0.1703 |
|
Energy t-Pl |
0.3079 |
112.0000 |
0.7588 |
|
|
|
|
t-Sp |
0.3079 |
110.5460 |
0.7588 |
|
|
|
|
F- |
1.2591 |
56.0000 |
0.1957 |
|
|
|
|
F-Lv |
1.9049 |
56.0000 |
0.1703 |
|
|
|
|
Interest t-Pl |
7.4684 |
113.0000 |
0.0000 |
6.6811 |
113.0000 |
0.0000 |
|
t-Sp |
7.4634 |
112.0421 |
0.0000 |
6.6701 |
108.4311 |
0.0000 |
|
F- |
1.1621 |
56.0000 |
0.2868 |
1.4632 |
56.0000 |
0.0776 |
|
F-Lv |
0.8365 |
56.0000 |
0.3624 |
5.2207 |
56.0000 |
0.0242 |
|
Fixed Capital t-Pl |
7.4734 |
113.0000 |
0.0000 |
6.6840 |
113.0000 |
0.0000 |
|
t-Sp |
7.4683 |
111.9722 |
0.0000 |
6.6728 |
108.2920 |
0.0000 |
|
F- |
1.1699 |
56.0000 |
0.2783 |
1.4731 |
56.0000 |
0.0740 |
|
F-Lv |
0.7881 |
56.0000 |
0.3766 |
5.1776 |
56.0000 |
0.0248 |
|
|
Interest |
|
|
Fixed Capital |
|
|
|
|
Test |
DoF |
2-Tail P |
Test |
DoF |
2-Tail P |
|
Wages t-Pl |
7.4684 |
113.0000 |
0.0000 |
7.4734 |
113.0000 |
0.0000 |
|
t-Sp |
7.4634 |
112.0421 |
0.0000 |
7.4683 |
111.9722 |
0.0000 |
|
F- |
1.1621 |
56.0000 |
0.2868 |
1.1699 |
56.0000 |
0.2783 |
|
F-Lv |
0.8365 |
56.0000 |
0.3624 |
0.7881 |
56.0000 |
0.3766 |
|
Energy t-Pl |
6.6811 |
113.0000 |
0.0000 |
6.6840 |
113.0000 |
0.0000 |
|
t-Sp |
6.6701 |
108.4311 |
0.0000 |
6.6728 |
108.2920 |
0.0000 |
|
F- |
1.4632 |
56.0000 |
0.0776 |
1.4731 |
56.0000 |
0.0740 |
|
F-Lv |
5.2207 |
56.0000 |
0.0242 |
5.1776 |
56.0000 |
0.0248 |
|
Interest t-Pl |
|
|
|
-0.0070 |
114.0000 |
0.9945 |
|
t-Sp |
|
|
|
-0.0070 |
113.9987 |
0.9945 |
|
F- |
|
|
|
1.0068 |
57.0000 |
0.4899 |
|
F-Lv |
|
|
|
0.0015 |
57.0000 |
0.9689 |
|
Fixed Capital t-Pl |
-0.0070 |
114.0000 |
0.9945 |
|
|
|
|
t-Sp |
-0.0070 |
113.9987 |
0.9945 |
|
|
|
|
F- |
1.0068 |
57.0000 |
0.4899 |
|
|
|
|
F-Lv |
0.0015 |
57.0000 |
0.9689 |
|
|
|