why do you weight a t test for a difference? what is the weighted average in t test why do I do a weighted t-test how to use a two sample test why two samples t test with weighted data weighted ns and average t which t test is performed on two samples, and which one is weighted? what is the two sample t test why does a two sample t test have weighted data? do t tests have weighted data why is t-test a weighted which data is weighted weighted t test what is the difference between a standard and a two sample t? why two sample t test used which two-sample t test is weighted? when to use two sample t-test why weighted data do you use p value for 2 sample weighted two samples