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Designing and Conducting Survey Research: A Comprehensive Guide, 4th Edition by Richard A. Parker, Louis M. Rea

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CHAPTER EIGHTDETERMINING THE SAMPLE SIZE

A crucial question at the outset of a survey research project is how many observations are needed in a sample so that the generalizations discussed in chapter 7 can be made about the entire population. The answer to this question is by no means clear-cut; it requires the careful consideration of several major factors. Generally the greater the level of accuracy desired and the more certain the researcher would like to be about the inferences to be made from the sample to the entire population, the larger the sample size must be.

Determinants of Sampling Accuracy

Researchers must address two interrelated factors with specificity before proceeding with the selection of a sample size: level of confidence ...

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