Which statistical Test to run

Hello everyone,

I have collected data to test the effectiveness of an intervention in reducing waiting times. So, I have pre-intervention population waiting times and post-intervention waiting times. I used an independent samples t-test to compare the pre and post intervention waiting times and all is well.

I collected data mentioned above at 2 different locations. How do I merge the results for the two locations. Is there a statistical test that can allow me to do that?

Thanks in advance.


TS Contributor
So you have 2 time periods and 2 locations. You could perform a two-factorial
analysis of variance which uses the data from all periods and locations.

With kind regards