Mathematics A-Level
discrete probability mass
What discrete probability mass means in Mathematics A-Level, as defined for WJEC.
Definition of discrete probability mass
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Reference: WJEC
Probability concentrated at isolated outcomes x_i such that 0 ≤ P(X = x_i) ≤ 1 and Σ P(X = x_i) = 1.
Topics that use discrete probability mass
- Probability (AS Unit 2: Applied Mathematics A) (WJEC A-Level)
Related terms
- addition rule
- Independent events
- multiplication rule
- mutually exclusive events
- Venn diagrams
- continuous probability density
- point probabilities
- set intersections
Using discrete probability mass in the exam
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