7.4 - Summary

 Case-Study: Baseball

Clark correctly identified his data as two quantitative variables. His question about these two variables was simple, is there any relationship between them. By examining the magnitude, direction, and linearity of the scatterplot, we were able to describe the relationship between home and away batting average. Next, the correlation coefficient allowed Clark to conclude that home and away batting averages are not related. So we may not know what to expect from the Red Sox on the road!