
My Most Used Reference
Applied Logistic
Regression
More Books — My Library 
Recent Comments
 Matthew on What is (Multivariate) Logistic Regression?
 Logistic Regression Sigmoid Function – Wang Zhe on How to Solve the Logistic Regression Equation for the Probability p.
 Martin Cohen on Understanding Logistic Regression Output:
Background Part 1 – Least Squares Regression  Martin Cohen on Understanding Logistic Regression Output:
Background Part 1 – Least Squares Regression  A gentle introduction to logistic regression and lasso regularisation using R  Eight to Late on What are ZValues in Logistic Regression?

Recent Posts
 What are ZValues in Logistic Regression?
 How Big a Sample? How Many XVariables?

Understanding Logistic Regression Coefficient Output:
Part 5 — Assessing Uncertainty 
Understanding Logistic Regression Coefficient Output:
Part 4 — Making Predictions  How to Solve the Logistic Regression Equation for the Probability p.
Archives
Categories
Meta
Author Archives: StatsProf
Understanding Logistic Regression Output:
Part 1 — The Coefficient Table
As with leastsquares linear regression, the most important part of the output of a logistic regression is the regression coefficient table. In this fivepart series of articles, which parallels and references the fivepart series reviewing the leastsquares regression coefficient table, … Continue reading
What is Ordinal Logistic Regression?
Ordinal Logistic Regression is logistic regression using an ordinal variable. An ordinal variable is a categorical variable where order matters. A variable that takes on the values of “very bad,” “bad,” “mediocre,” “good,” “very good” would be an example. The … Continue reading
Posted in FAQ
Leave a comment
What is Nominal Logistic Regression?
Nominal Logistic Regression is logistic regression using a nominal variable as the dependent Y variable. The “nom” in “nominal’ comes from the Latin for “name” (not “number”) like in the word “nomenclature.” So a nominal variable is a variable whose … Continue reading
LeastSquares Background Part 5 — Assessing Uncertainty
In this Article, I discuss assessing the uncertainty of the regression coefficient estimates and will briefly touch on assessing the uncertainty of predictions. This article is the last part of a five part series reviewing regular linearleast squares regression. As … Continue reading
Posted in Background
Leave a comment
LeastSquares Background Part 4 — Making Predictions
In this Article, I discuss another key use of the regression coefficients, namely to make predictions. This article is part 4 of a 5 part series briefly reviewing some aspects of regular linear leastsquares regression. Some background with respect to … Continue reading
Posted in Background
1 Comment
LeastSquares Background Part 3: Assessing the Effects of the XVariables
In this Article, I discuss the next use of the regression coefficients, namely to try to assess the impact of each of the variables. This article is the third part of a five part series providing a brief review of … Continue reading
Posted in Background
Leave a comment
Background Part 2 — Uses of the LeastSquares Regression Coefficients and Determining Which Variables Matter
In this article, I am going to focus on the most important section of the regression output, namely the table of regression coefficients and the statistics that accompanies them. This article is part 2 of a 5 part series reviewing … Continue reading
Posted in Background
Leave a comment
Understanding Logistic Regression Output:
Background Part 1 – Least Squares Regression
As I have indicated previously on this web site, I am going to use regular linear leastsquares regression as a starting point for explaining logistic regression. Thus, I will be assuming that you have some familiarity with regular linear regression. … Continue reading
About Odds and Odds Ratios
From Odds to Probability Related Articles: The Odds Ratio in Logistic Regression The Effects of the XVariables in Logistic Regression We have all used the word “odds” to describe the probability of something. “Odds are it will rain tomorrow” means … Continue reading
A Little About Logs
For some reason, which remains mysterious to me, all throughout high school math classes and the first year college math classes (at least in the U.S.), the natural logarithm (the log to the base e) is usually referred to as … Continue reading