# Probability

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##### Intros

###### Lessons

- Introduction to Probability
- What is probability?
- How to write probability as a fraction, decimal, and percent?
- How to draw a tree diagram?

- Introduction to statistics:

• What is mean?

• What is median?

• What is an outlier?

• What is mode?

• What is range?

- What is a two-way frequency table?
- How to read a two-way frequency table?

##### Examples

###### Lessons

- The following is the money raised in a school fund raising activity by each class in grade 9: $1 000, $580, $810, $1 050, $840 and $600. What is the mean, median and mode amount of money raised by these six classes?
- Six hundred people were randomly selected in downtown. They were asked if they choose their clothes based on its comfort or style. The following is the results:

Comfort

Style

Total

Male

172

133

305

Female

115

180

295

Both

287

313

600