Introduction to Probability and Calculating Probability

This video tutorial introduces probability, explaining how to calculate it using fractions, decimals, and percentages. It covers sample space diagrams, the probability formula, and special cases like 'or' and 'and'. The tutorial also discusses types of events, including mutually exclusive, independent, and dependent events, and how to calculate expected numbers.

What is the probability of rolling a die and getting a number greater than 4?

• 1/6

• 1/3

• 1/2

• 2/3

If you have a spinner with 8 sections and 2 of them are marked '3', what is the probability of landing on a '3'?

• 3/8

• 1/2

• 1/4

• 1/8

When calculating the probability of either event A or event B occurring, what should you do?

• Divide the probabilities

• Subtract the probabilities

• Multiply the probabilities

• Add the probabilities

Which of the following is an example of mutually exclusive events?

• Drawing a card from a deck and not replacing it

• Rolling a die and getting a 1 or a 6

• Picking a marble from a bag and replacing it

• Flipping a coin and rolling a die

How do you calculate the expected number of times an event will occur?

• Divide the probability by the number of trials

• Subtract the probability from the number of trials

• Add the probability to the number of trials

• Multiply the probability by the number of trials