Can a footprint taken at the scene of a crime help to predict the height of the criminal? In other words, is there an association between height and foot length? To investigate this question, a sample of 20 statistics students measured their height (in inches) and their foot length (in centimeters). Let's think about this study. What are the observational units in this study? Identify the two variables recorded for each observational unit. Which is the explanatory variable, and which is the response? Also classify these variables as categorical or quantitative. Explanatory: Type: Response: Type