The sample size should be a fair and unbiased representation of the population. In order for the sample to be unbiased it should be selected randomly. Random selection ensures that everyone has the same amount of information and opportunity. When researching a population the sample size depends on three factors, "the level of confidence desired, the margin of error the researcher will tolerate, and the variability in the population being studied" (Lind, 2002)...
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Random selection ensures that everyone has the same amount of information and opportunity. When researching a population the sample size depends on three factors, "the level of confidence desired, the margin of error the researcher will tolerate, and the variability in the population being studied" (Lind, 2002)...
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