Listing Outcomes and Expected Frequency (Edexcel GCSE Maths): Flashcards
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12 cards from this deck
Outcomes in probability
Outcomes in probability
Possible results that could occur
Sample space diagram
Sample space diagram
Shows all possible outcomes for two combined events
When to use sample space diagrams
When to use sample space diagrams
When two activities happen together
Expected frequency
Expected frequency
Estimate of how often something happens over many trials
Expected frequency formula
Expected frequency formula
Probability Number of trials
First step in probability problems
First step in probability problems
Identify all possible outcomes
Each cell in sample space diagram
Each cell in sample space diagram
A separate outcome
Find prob. from sample space diagram
Find prob. from sample space diagram
Count favourable outcomes ÷ total outcomes
First step creating sample space diagram
First step creating sample space diagram
Place outcomes from each event on top and side of grid
Prob. of rolling 5 or 6 on fair die
Prob. of rolling 5 or 6 on fair die
Expected wins: prob. , 180 games
Expected wins: prob. , 180 games
60 wins
Why use systematic listing
Why use systematic listing
Prevents missing important outcomes