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Note that the two exam scores are the standardised versions (mean = 0, standard deviation = 10), see Extension A on transforming data for more information if you're unsure about what we mean by this.įigure 2.7.1: Scatterplot of KS2 and KS3 Exam scores Let’s have another look at the scatterplot, complete with regression line, below ( Figure 2.7.1). The LSYPE dataset can be used to explore the relationship between pupils' Key Stage 2 (ks2) test score (age 11) and their Key Stage 3 (ks3) test score (age 14). Let’s work through an example of this using SPSS/PASW.
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