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2.7.1 Statistical distributions

A discrete random variable can take only [     ], with gaps between them.

A

When p=0.5p=0.5p=0.5, a binomial distribution is symmetric.

B

A discrete random variable can take only separate, countable values, with gaps between them.

C

\strongP(X>r)=1−P(X≤r)\strong{P(X>r)=1-P(X\le r)}\strongP(X>r)=1−P(X≤r)

D
  • A fixed number of trials
  • Exactly two outcomes per trial
  • Trials are independent
  • Success probability ppp is constant
  • XXX counts the number of successes

2.7.1 Statistical distributions Flashcards

  1. A Level
  2. /Maths
  3. /2.7.1 Statistical distributions

Flashcards for CCEA A Level Maths 2.7.1 Statistical distributions, covering the key formulae, methods and definitions you need to recall for AS 1, AS 2, A2 1 and A2 2. 22 cards, matched to the CCEA A Level Maths (2210) 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.