If a positive association exists between two quantitative variables, O The slope will be 0. O The slope will be negative The slope will be positive You do not know what the slope will do. If a positive association exists between two quantitative variables, O as x increases, y increases O as x increases, y stays the same O as x increases, y decreases Suppose you were to collect data for the pair of given variables in order to make a scatterplot. For the variables time spent on homework before an exam and the exam grade, which is more naturally the response variable and which is the explanatory variable? They are both response variables They are both explanatory variables Time spent on homework: response variable Exam grade: explanatory variable Time spent on homework: explanatory variable Exam grade: response variable