Sample Accuracy Refers to How Close a Random Sample's Statistic
Sample accuracy refers to how close a random sample's statistic is to the population's value it represents.
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The selection method and the size of the sample determines a sample's representativeness.
Researchers are concerned with sample size because a significant cost savings occurs when the correct sample size is calculated and used.
Thousands of consumers have joined online panels,which are mega-populations that represent consumer markets of many types.
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