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Edexcel International A Level · Mathematics

Statistics 1(S1) revisionBuild it yourself.

S1 covers 7 topics and 15 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 S1

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

Mathematical models in probability and statistics

  • Modelling in probability and statistics

Usually 2–9 marks

Data presentation

  • Histograms and grouped data
  • Box plots, outliers and skewness
  • Stem and leaf diagrams

Usually 2–10 marks

Location and spread

  • Mean, median and quartiles
  • Variance, standard deviation and coding

Usually 3–11 marks

Probability

  • Venn diagrams and probability laws
  • Conditional probability and tree diagrams
  • Independence and mutual exclusivity

Usually 3–12 marks

Correlation and regression

  • Product moment correlation coefficient
  • Least squares regression

Usually 3–11 marks

Discrete random variables

  • Probability distributions
  • Expectation and variance

Usually 3–12 marks

Normal distribution

  • Normal probability calculations
  • Inverse normal and finding parameters

Usually 3–12 marks

Other Mathematics units

P1P2P3P4M1M2S2

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