Different types of mean comparisons yield different results; why ?
Hello dear community, I am comparing the means of three (small) samples. I have three groups (A, B, C). If I compare them in two steps (A with B, B with C) I get significant mean difference according to t-test and pooled t test. However, if I run a comparison on A, B and C at the same time, using "Each pair Student's t" , I get no significant difference.(Example is provided as a picture). Could so...