can we use the mean across a period as a trial for a statistical test? how long does a test harness use data in the test harness can we use the mean duration in t test when is the trial used for the t-test why do i use the trial in welch's t test can we use mean duration in a trial is a trial valid can we use t test or welch's if welch test valid, which method when using mean duration across a sample period as the trial, if welch is valid? how do you find valid mean for trial if mean duration is valid how often will the results of a test be evaluated? can you use each trial as the trial for a t-test? when is the trial time used for a welch's test? can welch test be used to determine the duration of trial why do you use the trial on a t test what is the validity of using the duration across a sample period for welch's test? can a test harness be tested for t which statistical method can be used to measure duration of an operation can we use each trial as a trial