ANOVA

Charlotte Joseph
Mind Map by Charlotte Joseph, updated 11 months ago
Charlotte Joseph
Created by Charlotte Joseph almost 6 years ago
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Mind Map on ANOVA, created by Charlotte Joseph on 05/18/2014.
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ANOVA
1 ANOVAs Basics
1.1 Deal with differences between/ among means of a sample
1.2 No restrictions on the number of means
1.3 ANOVAs allow more than one IV
1.4 IVs= factors Conditions= levels of factors
1.5 Between subject factors: levels vary between participants
1.6 Within subject factors: levels vary within a participant
1.7 Reporting findings: F(x,xx)= x.xx, p= (<) xx.xx
1.8 ANOVA less likely to make a type 1 error than a t-test when there= 2+ IVs
2 F Ratio
2.1 Variance due to IV/ Error variance = F
2.2 Small F= error variance larger than IV varience
2.3 Large F= error variance smaller than IV variance
2.3.1 Large F= more likelihood variances caused by IV
3 Degrees of Freedom
3.1 Two figures need
3.2 Df- No of levels -1, then N - number of levels
4 Reading (one way) ANOVA output
4.1 DF: Condition df needed, error df needed. Total= sample size
5 Two-way ANOVA
5.1 2 factors
5.2 x*x e.g 2*2
5.3 Need 3 sig. tests as= 2 main effects, 1 interaction
5.4 Examine interaction first, if that not present examine main effects
5.5 Interaction: the way in which the two factors interact.An interaction is when one variable behaves differently in each condition of the other variable
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