RUNS-TEST(runs test data analysis)-lec.pptx

Lecture on runs test

1. ONE SAMPLE RUNS TEST

2. ONE SAMPLE RUNS TEST 01 02 03 04 PERFORMING A RUNS TEST FOR RANDOMNESS EXAMPLE USING MANUAL, EXCEL AND SPSS Runs Test Test Statistic for the Runs Test

3. ONE SAMPLE RUNS TEST RUNS TEST A run is a sequence of data having the same characteristic. Each run is preceded by and followed by data with a different characteristic or by no data at all. The number of data in a run is called the length of the run.

4. ONE SAMPLE RUNS TEST The Runs Test for Randomness The runs test for randomness is a non-parametric test that can be used to determine whether a sequence of sample data is random. Data are randomly distributed. : Data are not randomly distributed.   The null and alternative hypotheses for this test are as follows.

5. Test Statistic for the Runs Test When ≤ 20 and ≤ 20, the test statistic for the runs test is G, the number of runs. 2 methods for calculating When > 20 or > 20, the test statistic for the runs test is

6. PERFORMING A RUNS TEST FOR RANDOMNESS

7. EXAMPLE USING MANUAL EXCEL SPSS

8. ADD YOUR TITLE HERE PROBLEM : (EXAMPLE) Using the Runs Test .. You want to determine whether the selection of recently hired employees in a large company is random with respect to gender. The genders of 60 recently hired employees are shown in the data. At = 0.05, can you conclude that the selection is not random?

9. MANUAL COMPUTATION GIVEN THAT..

10. THANKS