Linear Regression

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Functional vs. Statistical • Relationships can be categorized as functional or statistical • Functional Relationship • one variable (Y) is a direct function of another (X) • Statistical Relationship • one where knowing the value of an Independent variable will let you estimate a value for the Dependent variable
Functional Relationship • Cooter Davenport, the head of the Hazard County motor pool, believes there is a relationship between the number of cars he sends over to a local tune-up shop and the amount of the bill that he receives • Cooter finds the information for the last five transactions with the tune-up shop Data from Tune-Up Shop Number of Cars Amount of Bill 2 $64 1 32 5 160 4 128 2 64
Page 1 and 2: Introduction to Linear Regression A
Page 3: • Many public management problems
Page 7 and 8: Functional Relationship • Task
Page 9 and 10: Statistical Relationships and Regre
Page 17 and 18: Centrality and Spread • Remember,
Page 39 and 40: Applying the Regression Equation
Page 41 and 42: Applying the Regression Equation Y
Page 43 and 44: Regression Example • Using the pr
Page 45 and 46: Linear Regression Measures of Goodn
Page 53 and 54: The Standard Error of the Estimate
Page 55 and 56:
The Standard Error of the Estimate
Page 57 and 58:
Page 59 and 60:
Page 61 and 62:
The Coefficient of Determination
Page 63 and 64:
The Coefficient of Determination 2
Page 65 and 66:
The Coefficient of Determination 2
Page 67 and 68:
The Standard Error of the Slope •
Page 69 and 70:
Page 71 and 72:
Page 73:
To summarize • Regression describ
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Linear Regression

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