SOCR EduMaterials AnalysisActivities FlignerKilleen
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SOCR Analysis Activities - Fligner-Killeen Non-parametric Test
Overview of the test Fligner-Killeen
The Fligner-Killeen test is a non-parametric test comparing whether k samples have equal variances. Some alternative statistical tests, for example the analysis of variance, assume that variances are equal across groups or samples.
Examples
Example 1
Go to the SOCR Fligner-Killeen Non-parametric Test Applet. This example is based on a dataset from the R package under the library MASS. The dataset's name is InsectSprays. In this dataset, there are two variables: count, which is quantitative, and spray, a factor of six groups, denoted by A to F. Here are the analysis steps for this example:
- As you start the SOCR Analyses Applet, click on Fligner-Killeen Test from the combo box in the left panel. Next, click on Example 2 and then the Data tab on the top of the right panel. You will see something like below. The data have been divided into 6 columns by groups.
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- Click on the Mapping tab to map the groups you would like to include in the analysis. Select at least two groups.
- Now you will click on Compute to let the program produce the results. Click on Result to view the results.
- Note: if you happen to click on the "Clear" button in the middle of the procedure, all the data will be cleared out. Simply start over from step 1.
InsectSprays dataset
Index | count | spray |
1 | 10 | A |
2 | 7 | A |
3 | 20 | A |
4 | 14 | A |
5 | 14 | A |
6 | 12 | A |
7 | 10 | A |
8 | 23 | A |
9 | 17 | A |
10 | 20 | A |
11 | 14 | A |
12 | 13 | A |
13 | 11 | B |
14 | 17 | B |
15 | 21 | B |
16 | 11 | B |
17 | 16 | B |
18 | 14 | B |
19 | 17 | B |
20 | 17 | B |
21 | 19 | B |
22 | 21 | B |
23 | 7 | B |
24 | 13 | B |
25 | 0 | C |
26 | 1 | C |
27 | 7 | C |
28 | 2 | C |
29 | 3 | C |
30 | 1 | C |
31 | 2 | C |
32 | 1 | C |
33 | 3 | C |
34 | 0 | C |
35 | 1 | C |
36 | 4 | C |
37 | 3 | D |
38 | 5 | D |
39 | 12 | D |
40 | 6 | D |
41 | 4 | D |
42 | 3 | D |
43 | 5 | D |
44 | 5 | D |
45 | 5 | D |
46 | 5 | D |
47 | 2 | D |
48 | 4 | D |
49 | 3 | E |
50 | 5 | E |
51 | 3 | E |
52 | 5 | E |
53 | 3 | E |
54 | 6 | E |
55 | 1 | E |
56 | 1 | E |
57 | 3 | E |
58 | 2 | E |
59 | 6 | E |
60 | 4 | E |
61 | 11 | F |
62 | 9 | F |
63 | 15 | F |
64 | 22 | F |
65 | 15 | F |
66 | 16 | F |
67 | 13 | F |
68 | 10 | F |
69 | 26 | F |
70 | 26 | F |
71 | 24 | F |
72 | 13 | F |
See also
- The Fligner-Killeen section of the SOCR EBook.
- Command-line driven execution of Fligner-Killeen Test.
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