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CHAPTER 3 COMMONLY USED STATISTICAL TERMS

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145CHAPTER 3COMMONLY USED STATISTICAL TERMSThere are many statistics used in social science research and evaluation. The two main areas of statistics are descriptive and inferential. The third class of statistics is design and experimental statistics. Descriptive statistics involve the tabulating, depicting, and describing of col-lections of data. These data may be either quantitative or qualitative. They provide a picture or description of the properties of data collected in order to summarize them into manageable form.

assess comparisons between correlations, percentages, mean differences, probabilities, and so on. Eta ( ): An index that indicates the degree of a curvilinear relationship. F-test (F): A parametric statistical test of the equality of the means of two or more samples. It compares the means and variances between and within groups over time. It is

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