Discussion
We use Mann-Whitney U test for testing equality of means of two populations if .................... .
Answer: B
The Mann-Whitney U test is used when the samples are from non-normal populations.
It is a non-parametric test that compares two independent samples using the ranks of the pooled observations, so it does not require the populations to be normal. It is the standard alternative to the two-sample t test when the normality assumption fails.
If the populations are normal, the t test (unknown variances) or z test (known variances) is used instead. Unequal sample sizes do not call for the U test; both the t test and the U test handle them.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development