Conditional Probability and the Rules of Probability

### Lessons for this standard

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### Related standards

- This standard is part of: Math.Content.HSS-CP
- This standard is derived from: CCSS.Math.Content.HSS-CP.A

#### More specific sub-standards

Describe events as subsets of a sample space (the set of outcomes) using characteristics (or categories) of the outcomes, or as unions, intersections, or complements of other events (“or,” “and,” “not”).

Understand that two events 𝘈 and 𝘉 are independent if the probability of 𝘈 and 𝘉 occurring together is the product of their probabilities, and use this characterization to determine if they are independent.

Construct and interpret two-way frequency tables of data when two categories are associated with each object being classified. Use the two-way table as a sample space to decide if events are independent and to approximate conditional probabilities.

Recognize and explain the concepts of conditional probability and independence in everyday language and everyday situations.

Understand the conditional probability of 𝘈 given 𝘉 as 𝘗(𝘈 and 𝘉)/𝘗(𝘉), and interpret independence of 𝘈 and 𝘉 as saying that the conditional probability of 𝘈 given 𝘉 is the same as the probability of 𝘈, and the conditional probability of 𝘉 given 𝘈 is the same as the probability of 𝘉.

#### Similar standards elsewhere

Understand independence and conditional probability and use them to interpret data.

Understand independence and conditional probability and use them to interpret data

Understand independence and conditional probability and use them to interpret data