Today we started with a brief discussion of what to do when rho (the observed value in Spearman's rho) is negative, as I know this came up last week and I didn't do a very good job of clarifying the issue. Here is a simple powerpoint explaining what to do in this scenario.
We then moved on to answering the question on designing your own experiment. This often comes up and can be worth 10 or 12 marks so is worth doing well. Here is the powerpoint. We answered January 2011 Q26 in class and it would be worth doing this if you were absent.
We then moved on to answering the question on designing your own experiment. This often comes up and can be worth 10 or 12 marks so is worth doing well. Here is the powerpoint. We answered January 2011 Q26 in class and it would be worth doing this if you were absent.
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