Probability and Statistics

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Probability Rules and Expected Values

Probability and Statistics Probability Rules and Expected Values

🎬 Video Tutorial

  • Equiprobable Events
  • Addition Rule for Probabilities
  • Expected Values (aka expected frequencies)
  • Practical Examples

📂 Revision Cards

Explanation of equiprobable events by using a die and showing that each face has an equal probability of 1/6.
Drawing coloured balls from a bag with 50 balls, showing 50% for blue and 30% for red.
Explanation of the probability of drawing blue or red balls from a bag with 50 balls using the addition rule for mutually exclusive events.
Calculating the expected absolute frequency using a die, illustrating that the expected absolute frequency of rolling a "3" over 60 trials is 10.

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