[R] stastistical test on normalized data

I performed experiments to analyse the effect of 2 different drugs of my preparations. The designs od the experiment is the following: on 11 preparations I tested the effect of drug 1 and on another 5 preparation I tested the second drug So the I calculated the % of the effect of the drugs respect

[R] stastistical test on normalized data

Dear R-maillit, I have to perform a stastistical test to asses if two grug show the same or different effect on my prepartion. I tested on the same preparation only one drug and I have to use normalized data due to high variability in the control condictions. What type can I use? A non paramatr