A college statistics class conducted a survey of how students spend their money. They gathered data from a large sample of students who estimated how much money they typically spent each week in different categories (e.g., food, entertainment, etc.). Jack wanted to predict how much students spend on leisure activities based on how much they spend on necessities. He calculated a regression equation, using spending on necessities as the explanatory variable (x) and leisure spending as the response variable (y). Read and evaluate this statement: Jack should use the regression equation to make a prediction only if the scatterplot of x and y indicates a reasonably linear relationship between "necessities spending" and "leisure spending."
