Develop a probability model and use it to find probabilities of events; compare probabilities from a model to observed frequencies; and if the agreement is not good, explain possible sources of the discrepancy.
7.SP.7.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.b
Develop a probability model (which may not be uniform) by observing frequencies in data generated from a chance process.
