Which non-parametric test is used for testing the null hypothesis if i

Question

Which non-parametric test is used for testing the null hypothesis if it is known that the scores of the employees before and after the training programme do not follow the normal distribution but the distribution of the differences of scores before and after the training is symmetrical about its median? Conduct the test at 1% level of significance and conclude the result.

29 Feb 2024

Answer :

Word Count : 397

When the scores of the employees before and after the training program do not follow a normal distribution but the distribution of the differences of scores before and after the training is symmetrical about its median, you can use the Wilcoxon signed-rank test.

This test is a non-parametric alternative to the paired t-test and is used to compare two related samples. It does not assume normality of the data but rather tests whether the medians of the two samples ____ ____ ____ ________ _____ _________ ______ ________ ___ _________.
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S. No	Before Training	After Training
1	60	68
2	62	70
3	67	80
4	64	74
5	66	66
6	63	72
7	69	84
8	63	60
9	60	65
10	62	90