Probability sampling has a certain amount of randomness built in so that bias or unbiasedness can be established and probability statements could be made about the accuracy of the methods (Scheaffer, Mendenhall, & Ott, 1996).
Probability sampling has a certain amount of randomness built in so that bias orunbiasedness can be established and probability statements could be made about the accuracy of the methods(Scheaffer, Mendenhall, & Ott, 1996).