how to separate between variables how to test the relationship of a drug and a gene expression? why use deseq why do you conduct a t test on gene expression before and after a drug how to separate variables in a genetic test does the drug effect a bias in test results which is an example of differential analysis for a study where the data points between conditions are the same? what does a t test do for a drug does deseq measure gene expression how do you determine between subjects variability how to use differential expression analysis how to test between subjects how to exclude between-subject variability when to use deseq how to exclude between subjects variability why t test between patients and drugs how to calculate the difference between the treatments of a drug and a placebo how to conduct a t-test for an x and y how to conduct a t-test with additional data to eliminate between-subject variability why are the variables between a group and a study different