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Cambridge · Form 4 · Syllabus 4040

Statistics

5 topics5 with notes

Form 4Writing O Level finals this year?Revision mode: every Statistics past paper by year, with marking schemes, and a checklist of the whole syllabus.
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  1. Measures of average and dispersion Mean, median and mode for ungrouped and grouped data (estimated mean using mid-points; median by interpolation or cumulative frequency; modal class). Choosing an appropriate average; effect of extreme values. Notes 1 PDF
  1. Index numbers, weighted averages and vital statistics Price relative = (price in current year ÷ price in base year) × 100. Notes 1 PDF
  1. Probability P(A) = favourable outcomes ÷ total equally likely outcomes; complementary events; relative frequency and expected frequency. Notes 1 PDF
  1. Time series and moving averages Data recorded at intervals over time (monthly sales, quarterly rainfall); plotting time series graphs; identifying trend, seasonal variation and random fluctuations. Notes 1 PDF
  2. Bivariate data, scatter diagrams and lines of best fit Plotting paired data; positive, negative and no correlation; strong and weak correlation; outliers; correlation does not imply causation. Notes 1 PDF