A Gentle Introduction to Statistics Using SASⓇ Studio

Chapter 11: Correlation

Introduction

Using the Statistics Correlation Task

Generating Correlation and Scatter Plot Matrices

Correlations among Variables in the Fish Data Set

Interpreting Correlation Coefficients

Generating Spearman Non-Parametric Correlations

Conclusion

Chapter 11 Exercises

Introduction

There are several ways to quantify the relationship between two continuous variables, the most common being a Pearson correlation coefficient. This chapter describes this as well as a nonparametric alternative called a Spearman rank-order correlation.

Using the Statistics Correlation Task

As a quick summary, a Person correlation coefficient measures the strength of the relationship between two variables. These variables are usually continuous, ...