Parametric and Nonparametric Inferential Statistical Tests: One-Sample T-Test Choosing the right statistical analysis depends on the nature of the variables being tested; and in the case of t-test, the kind of comparison that needs to be made. The one-sample t-test deal compares whether the average of a sample differs significantly from the average of the defined population. In order to use the one-sample t-test, the sample must come from a subset of a normally distributed population and the data to be measured is expressed as an interval
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