This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: c Kendra Kilmer January 30, 2009 Choosing the Best Regression Model Enter your x and y values into lists. To do this, hit STAT and select 1: Edit... If you have anything in L1 and L2, cursor up to the name of the list, hit CLEAR and ENTER. Now just enter in your values one at a time by pressing ENTER after each number. From the home screen find the equation of a model by selecting STAT, arrow over to CALC and then select one of the following models (these are the only ones you are responsible for) : 4: LinReg(ax+b) 5: QuadReg 6: CubicReg 7: QuartReg 9: LnReg 0: ExpReg To automatically insert the model into the Y= button once you have the name of the model on the home screen, press VARS, arrow over to YVARS, select 1:Function and then select a name. We need to do this so that we can compare the models graphically. When finding the equation of each model note the R 2 value. This value is known as the Coefficient of Determination and it is always a number between 0 and 1. The closer to 1 the better the fit.Determination and it is always a number between 0 and 1....
View
Full
Document
This note was uploaded on 03/27/2012 for the course MATH 142 taught by Professor Drost during the Fall '08 term at Texas A&M.
 Fall '08
 Drost

Click to edit the document details