week3. 2-way ANOVA Flashcards
how many independent variables does a two-way ANOVA need to have at least
2
are two-way ANOVA’s factorial
yes
what does a two-way ANOVA provide with its results
a significance test for each factor (main effect) and the interdependence of the effects of each factor (the interaction)
does a two-way ANOVA show the relationship between two independent variables swell as their effect on the dependent variable
yes
what is inverse efficiency
it is the calculation of response time and accuracy
do you want the inverse efficiency score to be high, why
no you want it to be a low scores it shows that external factors are being eliminated
what value provides a general measure of performance
the inverse efficiency score
how to compute a mixed subjects two-way ANOVA into SPSS
analyse –> general linear model –> repeated measures –> put in appropriate within-subjects and between-subjects in the dialogue boxes –> also create a profile plot and selected display means
how many summary tables do poi need to look at for a two-way ANOVA
two
what row of the two-way ANOVA within-subjects table do you need to report in a mixed-subjects
the sphericity assumed
what does the sphericity assumed row on a two-way within-subjects ANOVA table show in a mixed-subjects
the main effect
what row of a two-way within-subjects ANOVA table shows you the main effect in a mixed-subjects
the sphericity assumed
what row should you look at on a two-way between-subjects table in a mixed subjects
the second row, not intercept
how do you write up a two-way mixed ANOVA
say if the findings are significant or non significant of ________ (first variable) F (small df value, big df value) = F value, P= P value and _______ (second variable) F(small df value, big df value) = F value, P = P value
what does the second row tell you in a mixed two-way ANOVA within-subjects table
the interaction of the variables
how do you report the interaction of a two-way mixed ANOVA within-subjects
these should be interpreted in light of the statistically significant interaction, F (small df value, big df value) = F value, p = P value
when looking at the lines on a profile plot of a two-way ANOVA, if there was to interaction, how would the lines look
they would be parallel to each other
what is a simple effect in a two-way ANOVA
a way you can asses the interaction between two variables rather than all of them
what is one way of calculating a simple effect of a two-way ANOVA
t-test
how do you report a simple effect test
simple effect analysis revealed that disruption resulting from _____ was presented for the _____ (report a t-test) t= t value, P= p value , but not the ______ t= t value, p=.303
how do you do a two-way within subjects two-way ANOVA on SPSS
analyse –> general linear model –> repeated measures –> specify the within subjects, don’t specific any between-subjects
how do you do a two-way between-subjects ANOVA on SPSS
analyse –>general linear model –>univariate –> specify DV both between subjects factors are moved to the fixed factors list
