few samples

Hello! Recently a colleague reached out asking for help wondering if there was any kind of statistic measure that could be used to evaluate some results. The results are given in the table below. NA - Not Available There are 9 observations, but only three have a category assigned because...

Dear guys, a friend of mine asked me to help him in performing a significance test with his experimental data. Unfortunately I am not sure how to proceed since the problem is, in my opinion, presents some particularities. I am going to describe it below. He measured a quantity x under...