StatisticsChapter 15Repeated measures designs Repeated measures: when the same entities participate in all conditions of an experiment or provide data at multiple time points. Repeated measures can also be considered as a variation of the general linear model.For example.Ygi = b0i +b1iXgi +Ɛgib0i = b0 + u0ib1i = b1 + u1iYgi for outcome g within person i from the specific predictor Xgi with the error Ɛgig is the level of treatment conditioni for the individualsu0i for the deviation of the individual’s intercept from the group-level intercept The way that people typically handle repeated measures in IBM SPSS is to use a repeated-measures ANOVA approach.The assumption of sphericity The assumption that permits us to use a simpler model to analyse repeated-measures data is sphericity.Sphericity: assuming that the relationship between scores in pairs of treatment conditions is similar.It is a form of...
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Discovering statistics using IBM SPSS statistics by A. Field (5th edition) a summary
This is a summary of the book "Discovering statistics using IBM SPSS statistics" by A. Field. In this summary, everything students at the second year of psychology at the Uva will need is present. The content needed in the thirst three blocks are already online, and the rest
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