Examlex
According to the text, what variable in an experiment is different for the experimental group than for the control group?
Z-Test
A statistical method for assessing if there is a significant difference between the means of two populations when variances are known and the sample sizes are large.
Chi-Squared Test
A statistical method employed to assess if the observed frequencies significantly differ from the expected frequencies across one or more categories.
Nominal Data
A type of categorical data for which the categories do not have a natural order or ranking.
Critical Value
A point on the scale of the test statistic beyond which we reject the null hypothesis; it depends on the chosen significance level.
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