Common Core · Grade 7
7.SP.C.7
Grade 7 — Develop a probability model and use it to find probabilities of events, comparing probabilities from a model with observed frequencies.
The skill that covers it
What a student should be able to do
- Use P(not A) = 1 - P(A) to find the probability of a complement.
- Add probabilities for events that cannot both happen, and subtract the overlap when they can.
- Multiply probabilities for independent events joined by "and".
- Answer an "at least one" question by working with the complement instead.