The accuracy of the population sample used for public opinion polls depends on

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The accuracy of a population sample used in public opinion polls depends on randomness of selection, size of sample, and variation in the population. Random selection eliminates bias, a large sample size increases the likelihood of an accurate representation of the population, and variation in the population ensures that the sample is representative of different demographics and opinions. While factors such as question wording and method of contact can also impact the accuracy of the poll, the randomness and size of the sample are considered the most important factors. The use of computers can help with the randomness of the sample, but it is not the only determining factor. Believability and reliability are not directly related to the accuracy of the population sample.

The Accuracy of the Population Sample Used for Public Opinion