'Influential observation' diaporamas de présentation

Chapter 3 Association: Contingency, Correlation, and Regression

476 views • 40 slides

Class 7: Thurs., Sep. 30

Class 7: Thurs., Sep. 30. Outliers and Influential Observations. Outlier: Any really unusual observation. Outlier in the X direction (called high leverage point): Has the potential to influence the regression line.

378 views • 24 slides

Chapter 6

Chapter 6. Diagnostics for Leverage and Influence. 6.1 Importance of Detecting Influential Observations. Leverage Point : unusual x-value; very little effect on regression coefficients. 6.1 Importance of Detecting Influential Observations. Influence Point : unusual in y and x;.

211 views • 21 slides

Non-Linear Models

Non-Linear Models. Tractable non-linearity Equation may be transformed to a linear model. Intractable non-linearity No linear transform exists. Tractable Non-Linear Models. Several general Types Polynomial Power Functions Exponential Functions Logarithmic Functions

473 views • 20 slides

EXPLORING BIVARIATE DATA

162 views • 4 slides