How can we use probability and statistics to describe and make predictions about the world? How do we describe how likely something is? How do we determine the probability of a combination of events, if we know the probability of each event happening separately? How does the probability of an event change when we know the probability of a related event? How can a histogram or distribution be used to describe populations? How can information about a sample be used to make inferences about a population? How do we get data to analyze