Flashcards
Reading 5
Flashcards do conjunto (13)
- 1Analysis of varianceA special case of regression analysis, in which the independent variable is categorical rather than a continuous variable.
- 2Between-groups independent variableIndependent variables involve different groups of participants, each of whom is tested once.
- participants are assessed at one of two levels of the independent variable. - 3Repeated-measures independent variableIndependent variables involve the same participants, each of whom is tested more than once.
- at both levels (treatment and control) of independent variable. - 4In analysis of variance, what ratio is used to test whether an independent variable is statistically significant?F ratio
- 5When is the independent variable statistically significant?An independent variable is statistically significant when the absolute value of the calculated F ratio is greater than or equal to the critical F ratio.
- 6How is the between-groups mean square calculated?Between-groups sum of squares divided by degrees of freedom.
MSbg = (n x sum of (Mk - My)^2) / (g - 1) - 7What is the equivalent of between-groups mean square in regression analysis?Variance (s^2)
- 8How is Fcalc calculated?Between-groups mean square (MSbg) divided by residual mean square (MSres).
- 9A statistically signifcant F ratio indicates...that levels of the independent variable
differ by more than chance. - 10True/False: A statistically significant F ratio indicates that all levels differ by more than just chance.False
(It indicates that at least 1 pair of levels differs by more than just chance) - 11A common method of performing pairwise comparisons.Bonferroni minimum significant difference (MSD)
- 12Referring to the MSD, when is a pair of means statistically different?When the absolute value of the difference between the means is greater than or equal to the bonferroni minimum significant difference (MSD).
- 13In which case(s) do you not need to calculate MSD? - Repeated measures with 2 categories. - Independent groups with 3 categories. - Independent groups with a continuous independent variable.1. Repeated measures with 2 categories.
2. Independent groups with a continuous independent variable.
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- Research methods - Reading 5 (Originally from Amrit)
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- tyson.schierholt
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- Criado por Amrit Bhogal · 4 abr 2015
- Copiado por tyson.schierholt · 4 abr 2015
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