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Edexcel International A Level · Mathematics

Statistics 2(S2) revisionBuild it yourself.

S2 covers 7 topics and 13 subtopics. Pick the ones you keep getting wrong and LOCKIN writes you an original exam-style paper, with a full mark scheme.

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What's in S2

Every topic below can be selected on its own, or combined into one paper.

Binomial distribution

  • Binomial models and probabilities
  • Mean and variance of the binomial

Usually 3–10 marks

Poisson distribution

  • Poisson models and probabilities
  • Poisson approximation to the binomial

Usually 3–10 marks

Continuous random variables

  • Probability density functions
  • Cumulative distribution functions
  • Mean and variance from a pdf

Usually 4–12 marks

Continuous uniform distribution

  • Continuous uniform distribution

Usually 3–10 marks

Normal approximations

  • Normal approximations with continuity correction

Usually 4–12 marks

Sampling

  • Populations, censuses and samples
  • Sampling distributions of statistics

Usually 2–10 marks

Hypothesis testing

  • Hypothesis tests for a binomial proportion
  • Hypothesis tests for a Poisson mean and critical regions

Usually 5–12 marks

Other Mathematics units

P1P2P3P4M1M2S1

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