what is t test used for why use t & chi test what does the $chi2$ test do which test to use when a sample is split into two what is the correct test to use when a bmi is smaller than chi what is the difference between a t and a chi test what is the difference between a $t test and an $ci test what is the difference between t and chi test which r test is used to find mean differences in the two data sets of a population? what is the _t why test in r what is the difference between a chi and a t test what is the difference between a t and a chi what is a t test how to use a _t test in r data what is a _t test in r how does the _t test work why would you use a _t test for data how is t testing used r why use a _t test when analyzing a sample