PSYC 201W Chapter Notes - Chapter 5: Simple Random Sample, Sampling Probability, Sampling Error
3 May 2019
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Sampling: the process by which a researchers selects a sample of participants for a study. Simple random sample: a sample selected in such a way that every possible sample of the desired size has the same chance of being selected from the population: everyone has an equal chance of being selected. P r o b a b i l i t y s a m p l e s: researcher must ensure that the sample they select is representative of the population at large. Representative samples: a sample from which one can draw accurate, unbiased estimates of the characteristics of a larger population. The error of estimation: samples rarely mirror the whole population in every sense, sample characteristics always tend to differ from those of the general population. Sampling error: difference between scores obtained on a sample and the scores that would have been obtained if the the entire population had been studied.
