Two aptitude tests are currently being used to screen applicants for a certain p
ID: 3264982 • Letter: T
Question
Two aptitude tests are currently being used to screen applicants for a certain position within a company. The question arose as to whether the two tests are comparable, i.e., whether they yield the same results. Six applicants were selected at random to take both tests (in a random order). The following scores were recorded:
Use the Wilcoxon signed-rank test to determine whether there is a difference in scores between the two tests. Use Significance level = 0.10.
Applicant Test A Test B 1 85 87 2 93 94 3 98 92 4 68 73 5 76 73 6 83 85Explanation / Answer
Since the p- value (0.9104) > (0.10), we fail to reject Ho
Conclusion: There is no significant difference in scores between the two tests.
Wilcoxon Signed Rank Test variables: Test A - Test B 10 sum of positive ranks 11 sum of negative ranks 6 n 10.500 expected value 4.444 standard deviation -0.113 z corrected for ties .9104 p-value (two-tailed) No. Label Data Rank 1 -2 2.5 2 -1 1 3 6 6 4 -5 5 5 3 4 6 -2 2.5