The null hypothesis is a "straw man" used in a statistical test. Two hypotheses are evaluated: a null hypothesis (H 0) and an alternative hypothesis (H 1). The use of statistical methods in quality improvement takes many forms, including: They are a formalized body of techniques characteristically involving attempts to infer the properties of a large collection of data. Statistical methods in quality improvement are defined as the use of collected data and quality standards to find new ways to improve products and services. Statistics are defined as a field that involves tabulating, depicting, and describing data sets.
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