I need to compare patient experience on a scale of one to five(1-5) , before after an intervention.
What test should i employ and is there a simple app/website that can help me the same?
You could apply a Wilcoxon signed rank test.
Here is a link for an online tool:
https://www.socscistatistics.com/tests/signedranks/default.aspx
You may want to see the degree of difference that exists in your pre-test/post-test experiment as well as how well the IV contributes to the difference or relationship , then use One sampled t-Test.
Busari Yusuf The scale is of Likert type. We are not allowed to run a test based on normality. The test suggested by Jesper Fabricius is non-parametric and suitable for this case.
Yes, but that is also one of the assumptions of t-test. That the sample is assumed to be normally distributed.
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