The formula for conditional probability (Edexcel GCSE Statistics): Quizzes
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Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is the formula for conditional probability P(B|A)?
What is the formula for conditional probability P(B|A)?
P(A and B)/P(A)
How do you find P(A and B) using P(B|A)?
How do you find P(A and B) using P(B|A)?
P(B|A) × P(A)
If events A and B are independent, what is P(B|A)?
If events A and B are independent, what is P(B|A)?
P(B)
What is the key assumption in independence of two events?
What is the key assumption in independence of two events?
P(B|A) = P(B)
In a Venn diagram context, how is P(B|A) calculated?
In a Venn diagram context, how is P(B|A) calculated?
In A and B divided by A
Why is it important to identify the 'given' event in conditional probability?
Why is it important to identify the 'given' event in conditional probability?
It affects the calculation
Which is true for independent events in terms of conditional probability?
Which is true for independent events in terms of conditional probability?
P(A|B) = P(A) and P(B|A) = P(B)
What does the notation P(B|A) signify?
What does the notation P(B|A) signify?
Probability of B given A has happened
In the tiles problem, what was P(A), the probability of selecting a white tile?
In the tiles problem, what was P(A), the probability of selecting a white tile?
7/20
Using P(B|A), how did we find the probability of selecting a white tile with letter X?
Using P(B|A), how did we find the probability of selecting a white tile with letter X?
4/7