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Statistical Distributions

For any discrete random variable, the sum of all probabilities is: [...]\text{[...]}[...].

A

For any discrete random variable, the sum of all probabilities is: ∑P(X=x)=1\boxed{\sum P(X=x)=1}∑P(X=x)=1​.

B

An expected value NpNpNp is a long−runaveragelong-run averagelong−runaverage and does not have to be a wholenumber\boxed{whole number}wholenumber​.

C

(0.6)3×0.4(0.6)^3 \times 0.4(0.6)3×0.4 (three failures then one success)

D

A cumulative distribution function F(x)F(x)F(x) must never decreasedecreasedecrease and its final value must be 1\boxed{1}1​.

Statistical Distributions Flashcards

  1. A Level
  2. /Maths
  3. /Statistical Distributions

Flashcards for Edexcel A Level Maths Statistical Distributions, covering the key formulae, methods and definitions you need to recall for Paper 1, Paper 2 and Paper 3. 23 cards drawn from 6.1 Probability Distributions, 6.2 The Binomial Distribution, and 6.3 Cumulative Probabilities, matched to the Edexcel A Level Maths (9MA0) specification. Recall questions account for roughly 50% of marks at A Level Maths, so these target the marks you can secure before the paper starts.

Flashcards