Linear regression

Videos

• Against All Odds: Inside Statistics Video 7: Models for Growth.  Topics include linear growth, with review of the geometry of straight lines; an introduction to the least squares idea; exponential growth, and straightening an exponential growth curve by logarithms; prediction and extrapolation.  Studies of children's growth problems and of world oil production provide examples.  (28:57 mins.)  Video available in Main Office and from Penn State AVS.
• Against All Odds: Inside Statistics Video 8:  Describing Relationships.  Scatterplots and their variations are discussed in examples drawn from weight-loss programs to manatee protection.  Also covered are smoothing scatterplots of response versus explanatory variables by median trace; linear relationships, least squares regression lines, and comment on outliers.  (28:42 mins.)  Video available in Main Office and from Penn State AVS.