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✍️ Free Response Questions (FRQs)
👆 Unit 1 - Exploring One-Variable Data
✌️ Unit 2 - Exploring Two-Variable Data
🔎 Unit 3 - Collecting Data
🎲 Unit 4 - Probability, Random Variables, and Probability Distributions
📊 Unit 5 - Sampling Distributions
⚖️ Unit 6 - Inference for Categorical Data: Proportions
😼 Unit 7 - Inference for Qualitative Data: Means
✳️ Unit 8 Inference for Categorical Data: Chi-Square
📈 Unit 9 - Inference for Quantitative Data: Slopes
🧐 Multiple Choice Questions (MCQs)
✏️ Blogs
Best Quizlet Decks for AP Statistics
- Unit 1 Key Terms (15-23%): Exploring One-Variable Data
- Unit 2 Key Terms (5-7%): Exploring Two-Variable Data
- Unit 3 Key Terms (12-15%): Collecting Data
- Unit 4 Key Terms (10-20%): Probability, Random Variables, and Probability Distributions
- Unit 5 Key Terms (7-12%): Sampling Distributions
- Unit 6 Key Terms (12-15%): Inference for Categorical Data: Proportions
- Unit 7 Key Terms (10-18%): Inference for Quantitative Data: Means
- Unit 8 Key Terms (2-5%): Inference for Categorical Data: Chi-Squared
- Unit 9 Key Terms (2-5%): Inference for Quantitative Data: Slopes
- Closing Thoughts
4.6 Independent Events and Unions of Events
#anticipatingpatterns
#statisticalinference
#exploringdata
⏱️ 1 min read
written by
kanya shah
June 11, 2020
Independence
A and B are independent events if knowing whether or not one event has occurred doesn’t change the probability that the other event will happen. In other words, events A and B are independent if P(A | B)=P(A | BC)=P(A). Alternatively, events A and B are independent if P(B | A) = P(B | AC)=P(B). If the events are independent, then the multiplication rule becomes P(A and B) =P(A)*P(B).
The event “A or B” is known as the union of A and B, denoted by AB. It consists of all outcomes in event A, B, or both.
The general addition rule states that if A and B are any two events resulting from some chance process, then P(A or B)=P(A)+P(B)-P(A and B).
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