Probability

• Sample Space

  The set of all possible outcomes
• Tree Diagram

  A diagram used to show the total number of possible outcomes

  
• Fundamental Counting Principle

  the number of possible outcomes in a sample space can be found by multiplying the number of possible outcomes from each stage or event

  
• Outcome

  What can happen
• Outcome

  The result of a trial or experiment
• Sample space

  The set of all possible outcomes of an experiment
• Systematic listing


  A method of listing all possible outcomes in a logical order
• Two-way table


  A table used to organise data with two variables
• Tree diagram


  A diagram that shows all the possible outcomes of an experiment
• Trial


  A single experiment or observation
• Event

  ● A set of one or more outcomes
• Likelihood scale


  O A scale used to describe the likelihood of an event occurring
• Probability scale

  A scale from 0 to 1 used to measure the probability of an event
• Relative frequency


  ● The proportion of times an event occurs in a set of trials
• Theoretical probability


  ● The probability of an event calculated from the sample space
• Experimental probability


  ● The probability of an event calculated from experimental data
• Expected frequency

  The number of times an event is expected to occur in a set of trials
• Independent events


  Events where the outcome of one event does not affect the outcome of another event