Mean and Median Differences
Side-by-Side Box Plots
When variables are associated, information about the value of one variable provides information about the value of the other variable. For example, average temperature might be associated with ice cream sales because people tend to buy more ice cream in summer months, when the temperature is hotter. This doesn’t necessarily mean that the higher temperature causes more people to buy ice cream, but it does mean that we can predict ice cream sales more accurately if we know what the temperature is outside.