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Tree diagrams and the meaning of "given"

Tree diagrams and the meaning of "given"

Probability tree for drawing two counters without replacement from a bag with 5 red and 3 blue counters, showing first and second branch probabilities A probability tree shows the possible routes through a sequence of events. In conditional probability, the second probability can depend on what happened first, so the branches after the first split may be different.

Conditional Probability Lesson

  1. GCSE
  2. /Maths
  3. /Conditional Probability

Step-by-step lessons covering OCR GCSE Maths Conditional Probability for Foundation and Higher tier. Each lesson works through exam-style questions in the written papers format. Build fluency with number, ratio and algebra first, since geometry, probability and statistics topics rely on them, and leave extra time nearer the exam for Higher-tier problem-solving and multi-step reasoning questions.

Lessons

SurdsBoundsDirect and Inverse ProportionQuadratic FormulaFactorising Harder QuadraticsAlgebraic FractionsRearranging Harder FormulaeInverse and Composite FunctionsIterationFinding the Area of Any TriangleThe Sine RuleThe Cosine RuleCongruent Triangles3d Pythagoras and TrigonometryHistogramsConditional Probability