Examlex
Magazines are almost perfect for many direct marketers because of their audience selectivity and high reach among prospects who likely are not heavy users of other media.
Sample Proportion
The fraction of observations in a sample that belong to a certain category, serving as an estimate of the proportion in the population.
Bias
A systematic error or deviation from the truth in results or inferences.
Normal Distribution
A bell-shaped curve distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean.
Simple Random Sample
A portion of a broader statistical population where each member has an equal likelihood of selection.
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