Math 7360 Homework Assignment #2
The R dataset Cars93, stored in the MASS library, provides records for 93 cars selected at
random from among 1993 passenger car models that were listed in both Consume
From "Practical Regression and ANOVA
Using R" by Julian Faraway, 2002
Chapter 10
Variable Selection
Variable selection is intended to select the best subset of predictors. But why bother?
1. We want t
Data Analysis Math 7360
Spring 2014
The manipulation of statistical formulas is no substitute for knowing what one is doing.
~Hubert M. Blalock, Jr.
Instructor: Michelle Lacey
Office: Gibson 417C
Phon
Robust Regression
Appendix to An R and S-PLUS Companion to Applied Regression
John Fox
January 2002
1
M -Estimation
Linear least-squares estimates can behave badly when the error distribution is not n
Math 7360, Spring 2014
Data Analysis
Page 1 of 2
Handout #7
Robust Regression
As we know, standard linear regression finds coefficients to minimize the sum of squared
2
differences between the fitted
Math 7360, Spring 2014
Data Analysis
Page 1 of 2
Handout #8
Generalized Linear Models
Models for Binary Response Data
Logistic regression methods are typically employed for binary response data, imple
Math 7360, Spring 2014
Data Analysis
Page 1 of 2
Handout #10
Nonlinear Least Squares
In some cases, we wish to estimate parameters for models that are nonlinear in nature, such as
models for populatio
Math 7360, Spring 2014
Data Analysis
Page 1 of 3
Handout #3
Lesson 2 (cont): Looking at data, univariate analysis
Density Estimation
Although a relative frequency histogram provides a sort of estimate
Math 7360, Spring 2014
Data Analysis
Page 1 of 3
Handout #4
Lesson 3: Linear regression
A regression model expresses one variable as a linear combination of one or more other
variables. We call the fi
Math 7360, Spring 2014
Data Analysis
Page 1 of 4
Handout #2
Lesson 1 (cont.): Working with numbers and generating data.
Distributions
For all of the standard statistical distributions, R includes func
Math 7360, Spring 2014
Data Analysis
Page 1 of 7
Handout #1
A Crash Course in R
Lesson 0: Motivation.
This package may not seem too appealing at first, because its not particularly user-friendly.
You
Math 7360, Spring 2014
Data Analysis
Page 1 of 2
Handout #6
Lesson 5: Model Selection
Lets load the dataset mtcars. This dataset was extracted from the 1974 Motor Trend US
magazine, and contains 11 va
Math 7360, Spring 2014
Data Analysis
Page 1 of 7
Handout #5
Lesson 4: Data types and classes, modeling with non-numeric data
An object in R is assigned a class attribute, which describes the object an