how to test sample size to find representative how to check sample representativeness for an experiment how to check the representativeness of a sample how to verify representativeness of a sample how do i test the sample in random sample how to test representativeness of a sample test for dummy variable what is the sample size range how to check sample size for representativeness how to check representativeness of sample based on dummy variable how to test representativeness of sample what is the average dummy variable sample can you test the representativeness of a sample using dummy variable what would a dummy sample test be how to check the sample is representative how to check the representativeness of a sample test sample size for sample representativeness how do you measure representativeness what is the dummy variable test when using dummy variable a sample size is determined what should the error margin of the sample be?