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4.1.1 Probability (A-level only)

For any event AAA, [...]\text{[...]}[...].

A

For any event AAA, 0≤P(A)≤1\boxed{0\le P(A)\le 1}0≤P(A)≤1​.

B

Provided P(B)>0P(B)>0P(B)>0, P(A∣B)=P(A∩B)P(B)\boxed{P(A\mid B)=\frac{P(A\cap B)}{P(B)}}P(A∣B)=P(B)P(A∩B)​​.

C

The intersection A∩BA\cap BA∩B.

D

At each split in a tree diagram, the branch probabilities add to 1\boxed{1}1​.

4.1.1 Probability (A-level only) Flashcards

  1. A Level
  2. /Maths
  3. /4.1.1 Probability (A-level only)

Flashcards for WJEC A Level Maths 4.1.1 Probability (A-level only), covering the key formulae, methods and definitions you need to recall for AS Unit 1, AS Unit 2, A2 Unit 3 and A2 Unit 4. 20 cards, matched to the WJEC A Level Maths (1300QS) 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