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| analysis of variance (F test) |
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| A statistical significance test for determining whether two or more means are significantly different. F is the ratio of systematic variance to error variance. |
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| A concept use in tests of statistical significance; the number of observations that are free to vary to produce a known outcome. |
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| 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 means |
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| statistics designed to determine whether results based on sample data are generalizable to a population |
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| the hypothesis, used for statistical purposes that the variables under investigation are not related in the population, that any observed effect based on sample results is due to random error |
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| the probability of correctly rejecting the null hypothesis |
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| the likelihood that a given event (among a specific set of events) will occur |
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| the hypothesis that the variables under investigation are related in the population- that the observed effect based on sample data is true in the population. |
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| 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 |
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| variability in a set of scores that is the result of the independent variable; statistically, the variability of each group mean from the grand mean of all subjects |
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| a statistical significance test used to compare differences between means |
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| an incorrect decision to reject the null hypothesis when it is true |
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| an incorrect decision to accept the null hypothesis when it is false. |
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