1. Statistics 3502/6304 Prof. Eric A. Suess Chapter 3

2. Data Description – Three or more Quantitative Variables Correlation Matrix Scatterplot Matrix

3. Two Quantitative Variables

4. Data Description – Three or more Quantitative Variables Correlation Matrix If we have many variables we can compute the correlation for all pair of quantitative variables. See Exercise 3.69 AIDS, syphilis, tuberculosis

5. Correlation Matrix Correlation: AIDS, Syphilis, Tuber. AIDS Syphilis Syphilis 0.994 0.000 Tuber. 0.989 0.992 0.000 0.000 Cell Contents: Pearson correlation P-Value

6. Scatterplot Matrix

7. Scatterplot Matrix – Linear Regression

8. Scatterplot Matrix – Quadratic Linear Regression

9. Scatterplot Matrix – Cubic Linear Regression

10. Regression Models