Probability and statistics: trees, experiments, samples and claims

More probability and statistics: tree diagrams in depth, expected outcomes from experiments, sampling and populations, critiquing charts and claims, and sample spaces in harder contexts.

Start: Tree diagrams in depthAbout 24 min

Lessons

Practice and tests

Mixed practiceQuestions mixed across your lessons.

By the end you can

Complete and use tree diagrams for independent and dependent events, with and without replacement, and use 1 − P(none) for at least one
Work out conditional probabilities and unknown numbers of items from a tree (Higher)
Estimate probabilities from experiments, judge which estimate is most reliable, and work out expected numbers and profits
Use a random sample to estimate counts, means and totals for a population, and spot a biased sample
Estimate a population by capture-recapture, and say what it assumes (Higher)
Spot misleading charts, check claims against the numbers, and compare two distributions with an average and a spread
Use sample space grids and the product rule for games, codes, cards without replacement and three picks

Helps with: GCSE (AQA, Edexcel, OCR)

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