Lecture 18 - Quiz 3 is Friday, April 4, 2008 3 problems...

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Quiz 3 is Friday, April 4, 2008 3 problems covering Chapters 8-10 Same format as Exams 1 and 2 HW 3 due on Friday Chapter 8: 5, 11, 15, 21, 35, 37, 46, 48, 53 Chapter 9: 7, 19, 25, 37, 41, 47, 51, 57, 61 Chapter 10: 7, 9, 41 Project Proposals due on Friday Tentative Title Objective of the study Summary/Source of the data Anticipated method(s) to be applied How the study relates to your major
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Simple Linear Regression and Correlation (Moving on to Chapter 12) If there is a true relationship between the variables X and Y , it can be modeled using the Simple Linear Regression Model , that is described by the equation y = β 0 + 1 x + ε
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The True Regression Model Showing how Y Varies for a Given Value of X: y = β 0 + β 1 x x 1 y 1 = β 0 + β 1 x 1 y 2 = β 0 + β 1 x 2 x 2 Y 2 = β 0 + β 1 x 2 Y 1 = β 0 + β 1 x 1 True Regression Line Y= β 0 + β 1 x X 1 X 2
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The distance between the predicted value of Y, and the actual value of Y is called the deviation, error or residual .
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Deviation between the data point and the line Least Squares Line 10 15 20 25 30 0 1234 56 X Y 35 30 25 20 15 10 5
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Dependent Variable Independent Variable yx n-obs.
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This note was uploaded on 04/08/2008 for the course ENGR 2600 taught by Professor Malmborg during the Spring '08 term at Rensselaer Polytechnic Institute.

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Lecture 18 - Quiz 3 is Friday, April 4, 2008 3 problems...

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