Collect the Data
Use the most recent April issue of Consumer Reports. It will give the total fuel efficiency (in miles per gallon) and weight (in pounds) of new model cars with automatic transmissions. We will use this data to determine the relationship, if any, between the fuel efficiency of a car and its weight.
- Using your random number generator, randomly select 20 cars from the list and record their weights and fuel efficiency into Table.
- Which variable should be the dependent variable and which should be the independent variable? Why?
- By hand, do a scatterplot of “weight” vs. “fuel efficiency”. Plot the points on graph paper. Label both axes with words. Scale both axes accurately.