Sample Size and Statistical theory - Summary

Sample Size and Statistical theory - Summary

This chapter has introduced some useful concepts and applied them to the problem of determining the sample size. A population  characteristic, such as the attitude of symphony season ticketholders, is to be estimatecTby the sample. A sample statistic such as the average attitude of a sample of season ticketholders, is used to estimate the population characteristic. The sample statistic will have a variance (it will not be the same each time a sample is drawn), and this will be a measure of its reliability. The estimate, based on the sample statistic, has an interval associated with it that reflects

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