Teaching Elementary Statistics with JMP

Chapter   5

The Analysis of Bivariate Data—Diagnostics

Introduction

Outliers

Influential Points

Diagnosing Linearity: Transformations

What Have We Learned?

References

Introduction

We saw in chapter 4 that JMP is a terrific partner to have when performing regression diagnosis. We breezed through a regression analysis of the gastric emptying time data with ease, generally checking the assumptions for the straight-line model with gratifying results. The data turned out to be decently well behaved, so we could safely operate under the presumption of meeting the assumptions. However, not all data will be benignly distributed, and in this chapter I will demonstrate some of the capabilities of JMP in the context of less well-behaved data than we ...