Examlex
Which of the following is a formal set of statements that explains why and how certain events are related to one another?
Statistical Significance
Rejection of the null hypothesis when an outcome has a low probability of occurrence (usually .05 or less) if, in fact, the null hypothesis is correct.
Probability Level
The threshold of significance, usually denoted as alpha (α), indicating the likelihood of observing the data if the null hypothesis is true.
Systematic Variance
The part of variance in a set of data that is attributable to identified sources or factors, as opposed to random or error variance.
Error Variance
Random variability in a set of scores that is not the result of the independent variable. Statistically, the variability of each score from its group mean.
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