which two subs are within an experiment and which are between them? why is a t-test used in biological research, when all three replicated when two samples are compared, how many c what do the numbers in c mean what is the number after c in a two sample t-test? how to find the number of different subs of a t-test. how to compare two samples in a t-test? t2 and T2 numbers what does the number c mean when the two groups of a t test are what is the number for the two subs what means within group? how many pairs of subs in the t-test which number means within a t-test how to tell if c, t1, c2, t3 and t1 are same where is the covariate adjustment for t-test which two samples are within groups what is the number for a two sided t-test what does the name of each sub indicate in the t-test t-tests how many samples why do i use the two samples t-test