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19 Cards in this Set
- Front
- Back
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_______is similar to ANOVA in that it tests the null hypothesis of no difference between two or more means; however, it can also incorporate a covariate.
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ANCOVA |
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According to Field, a covariate is a variable that has an association with the…
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dependent variable. |
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In the context of ANCOVA, we might consider the shared variance between the dependent variable and the covariate as _____, so we want to _____ statistically.
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problematic; control for it
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In practice, it is rare to find scenarios where the covariate is correlated with the ____, but not the …
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dependent variable; independent variable.
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In ANCOVA, people who argue that the independent variable must be unrelated to the covariate fail to realise that such a claim should also be applied to _______, but such a position is never asserted, because it would make no sense.
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multiple regression
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From a more mathematical perspective, the advantage of including a covariate in an ANCOVA is that it …
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reduces the error variance.
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When the covariate correlates only with the dependent variable, the inclusion of the covariate in an ANCOVA causes ____ to increase.
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eta-squared
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By controlling known extraneous variables, we gain greater insight into the effect of the…
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predictor variables.
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A unique assumption associated with ANCOVA is …
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Homogeneity of regression slopes.
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The homogeneity of regression slopes assumption essentially implies that the _____ is equal …
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correlation between the covariate and dependent variable; across groups. (2 marks).
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In SPSS, the homogeneity of regression slopes assumption is actually a test of the ____ between the ____ and the covariate.
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interaction; independent variable
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A point-biserial correlation is really just a …
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Pearson correlation
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By performing an ANCOVA in SPSS, you can get adjusted ….
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means.
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In the ANCOVA example relevant to sex differences in brain size, it was demonstrated that you can get exactly the same results as an ANCOVA by performing a ______
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partial correlation.
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A _______ represents the association between an independent variable and a dependent variable, controlling for the effects of another variable on both the independent variable and the dependent variable.
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partial correlation
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Because of the development of the between groups ANOVA, there really should not be any need to ever use the ____
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independent samples t-test.
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Because of the development of the repeated measures ANOVA, there really should not be any need to ever use the ____
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paired samples t-test.
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The non-parametric equivalent of the one-way between measures ANOVA is the…
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Kruskal-Wallis test
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The non-parametric equivalent of the one-way repeated measures ANOVA is the…
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Friedman ANOVA
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