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# OCR S1 Revision Watch

1. I'm trying to revise for the OCR S1 exam in two weeks, but the issue is that the exam is likely to be much harder than the questions in the S1 textbook or in the (vast majority of) the past papers. Where can I find questions on similar topics, but at a slightly higher level of difficulty (i.e. which test understanding a little more)?

I'm looking for topics like Spearman's Rank and PMCC, permutations and combinations, probability, and histograms/stem and leaf/box and whisker plots.

A good ballpark example is the question in Jan 2013 where, having found P(X=x) (x was a given number), we then had to make a new binomial B(10,P(X=x)) and find P(B>4).
I'm trying to revise for the OCR S1 exam in two weeks, but the issue is that the exam is likely to be much harder than the questions in the S1 textbook or in the (vast majority of) the past papers. Where can I find questions on similar topics, but at a slightly higher level of difficulty (i.e. which test understanding a little more)?

I'm looking for topics like Spearman's Rank and PMCC, permutations and combinations, probability, and histograms/stem and leaf/box and whisker plots.

A good ballpark example is the question in Jan 2013 where, having found P(X=x) (x was a given number), we then had to make a new binomial B(10,P(X=x)) and find P(B>4).
I'm not making any promises but maybe take a look at some MEI Papers - they tend to be harder anyway

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Updated: May 14, 2013
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