Statistics 1770 Lecture Notes - Scatter Plot
Document Summary
Chapter 6 association between quantitative variables: what variables might be related/associated with what kind of gas mileage a vehicle gets, environmental factors wind speed quantitative, categorical (bare road, gas used categorical, engine size/ 4wd vs 2wd quantitative, condition of vehicle categorical, quantitative, towing quantitative, city vs. highway quantitative, categorical, speed of vehicle. Response and explanatory variables: response variable (dependent variable), the outcome variable on which comparisons are made it is usually the variable of interest, explanatory variable (predictor variable/independent variable, defines the groups to be compared with respect to values on the response variable, variables may be quantitative or categorical, not necessarily a casual relationship, example: response / explanatory, blood alcohol level/# of bottle of beer consumed, grade on test / amount of study time, binge drinking / gender, number of cigarettes per week/ number of alcoholic drinks per week.
