which test would be used to test for unusable x in pc xperia what kind of test is used to test for error? what is paired test when to use paired or unpaired tests which test to use to test for unusable data can paired tests be used for unusable values when do paired tests use unpaired tests why is my paired test unusable how to test two devices what test do i use to check a value of unusable what is paired t test used for when testing a matched t test is an error is it unable to be used? how to test a device with unpaired testing how to test for error with paired t test when do you use paired and unpaired t tests why should paired test be used which test to use when test unusable why do you use unpaired or paired test? what is the test value of x for 2nd device when does the error value come from an object being tested is unusable?