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A Level · Mathematics · Chapter 26
Ch 26 S1 Discrete Random Variables: complete notes
Neat, exam-ready notebook-style notes for Ch 26 S1 Discrete Random Variables, following the Cambridge A Level syllabus, AS and A Level. This chapter is part of the complete A Level Mathematics 9709 Complete Notes: All 32 Chapters, AS and A Level (Cambridge 2026–2027).
Test yourself: Chapter 26 online MCQ test, free: 10 questions, 15 minutes, instant score and solutions →
What you get in the pack
- All 32 chapters of the Cambridge International AS & A Level Mathematics 9709 syllabus (exams 2026–2027): Pure Mathematics 1 and 3 (also covering Pure 2), Mechanics, and Probability & Statistics 1 and 2
- Every syllabus statement covered in order, each marked AS or A Level, with clear notes and diagrams drawn for these notes
- 8 worked examples in every chapter, including the derivations the syllabus asks for
- Practical skills (planning, analysis and evaluation) and common mistakes taken from Cambridge examiner reports
- 20 multiple-choice questions per chapter with answers and explanations
- Original exam-style structured questions in the style of the Cambridge papers, with full mark schemes (no past-paper reprints)
- Quick-reference sheet and an "I can" checklist at the end of every chapter
- Colour PDF and a black and white copy of every chapter for printing
- Independent notes; not endorsed by or affiliated with Cambridge University Press & Assessment
All chapters in this pack
- Ch 1 P1 Quadratics
- Ch 2 P1 Functions
- Ch 3 P1 Coordinate Geometry
- Ch 4 P1 Circular Measure
- Ch 5 P1 Trigonometry
- Ch 6 P1 Series
- Ch 7 P1 Differentiation
- Ch 8 P1 Integration
- Ch 9 P3 Algebra
- Ch 10 P3 Logarithmic and Exponential Functions
- Ch 11 P3 Trigonometry
- Ch 12 P3 Differentiation
- Ch 13 P3 Integration
- Ch 14 P3 Numerical Solution of Equations
- Ch 15 P3 Vectors
- Ch 16 P3 Differential Equations
- Ch 17 P3 Complex Numbers
- Ch 18 M1 Forces and Equilibrium
- Ch 19 M1 Kinematics of Motion in a Straight Line
- Ch 20 M1 Momentum
- Ch 21 M1 Newton's Laws of Motion
- Ch 22 M1 Energy, Work and Power
- Ch 23 S1 Representation of Data
- Ch 24 S1 Permutations and Combinations
- Ch 25 S1 Probability
- Ch 26 S1 Discrete Random Variables
- Ch 27 S1 The Normal Distribution
- Ch 28 S2 The Poisson Distribution
- Ch 29 S2 Linear Combinations of Random Variables
- Ch 30 S2 Continuous Random Variables
- Ch 31 S2 Sampling and Estimation
- Ch 32 S2 Hypothesis Tests