A spinner is divided equally into $5$5 sections, but $2$2 of them are colored white.
What is the probability of landing on white?
If the spinner is spun $685$685 times, how many times would you expect it to land on white?
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.
Develop a uniform probability model by assigning equal probability to all outcomes, and use the model to determine probabilities of events.
Develop a probability model (which may not be uniform) by observing frequencies in data generated from a chance process.