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Glossary
These is glossary of research key terms. This glossary is intended as an aid to professionals and non-professionals who find the world of research somewhat intimidating. While it is impossible to cover all the terms that can be confusing, this document briefly defines some of the more common terms and concepts.

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Statistic
1. A statistic generally refers to a summary value calculated from a sample. For example, we might compute the average age of all respondents. The term contrasts with population parameter. 2. An estimate of a parameter calculated from a set of data gathered from a sample. 3. number value that represents a summary characteristic of a sample drawn from a population. It is a point estimate of the parameter value for the population. Statistics are usually designated by roman letters (e.g. the mean weight of a sample `X = 135lbs).
 


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