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Basic Analysis > Logistic Analysis
Publication date: 07/30/2020

Logistic Analysis

Examine Relationships between a Categorical Y and a Continuous X Variable

The Logistic platform fits the probabilities for response categories to a continuous x predictor. The fitted model estimates probabilities for each x value. The Logistic platform is the nominal or ordinal by continuous personality of the Fit Y by X platform. There is a distinction between nominal and ordinal responses on this platform:

Nominal logistic regression estimates a set of curves to partition the probability among the responses.

Ordinal logistic regression models the probability of being less than or equal to a given response. This has the effect of estimating a single logistic curve, which is shifted horizontally to produce probabilities for the ordered categories. This model is less complex and is recommended for ordered responses.

Figure 8.1 Examples of Logistic Regression 

Contents

Overview of Logistic Regression

Nominal Logistic Regression
Ordinal Logistic Regression

Example of Nominal Logistic Regression

Launch the Logistic Platform

Data Structure

The Logistic Report

Logistic Plot
Iterations
Whole Model Test
Fit Details
Parameter Estimates

Logistic Platform Options

ROC Curves
Save Probability Formula
Inverse Prediction

Additional Examples of Logistic Regression

Example of Ordinal Logistic Regression
Additional Example of a Logistic Plot
Example of ROC Curves
Example of Inverse Prediction Using the Crosshair Tool
Example of Inverse Prediction Using the Inverse Prediction Option

Statistical Details for the Logistic Platform

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