Investigate chance processes and develop, use, and evaluate probability models. 

7.SP.5 Understand that the probability of a chance event is a number between 0 and 1 that expresses the likelihood of the event occurring.

7.SP.6 Approximate the probability of a chance event by collecting data on the chance process that produces it and observing its long-run relative frequency, and predict the approximate relative frequency given the probability.

7.SP.7 Develop a probability model and use it to find probabilities of events.

a. Develop a uniform probability model by assigning equal probability to all outcomes and use the model to determine probabilities of events.

7.SP.7 Develop a probability model and use it to find probabilities of events.

b. Develop a probability model (which may not be uniform) by observing frequencies in data generated from a chance process.

7.SP.8 Find probabilities of compound events using organized lists, tables, tree diagrams, and simulation.

a. Understand that the probability of a compound event is the fraction of outcomes in the sample space for which the compound event occurs.

7.SP.8 Find probabilities of compound events using organized lists, tables, tree diagrams, and simulation.

b. Represent sample spaces for compound events using methods such as organized lists, tables, and tree diagrams.

7.SP.8 Find probabilities of compound events using organized lists, tables, tree diagrams, and simulation.

c. Design and use a simulation to generate frequencies for compound events.