Stat 100 Regression Correlation

A measure of association between two numerical variables

• Correlation

• Pearson’s Correlation Coefficient, r

• Positive Correlation

• Negative Correlation

• Regression

measures strength & direction of the linear association between 2 numerical paired variables

• Correlation

• Pearson’s Correlation Coefficient, r

• Positive Correlation

• Negative Correlation

• Regression

• Correlation

• Pearson’s Correlation Coefficient, r

• Positive Correlation

• Negative Correlation

• Regression

• Correlation

• Pearson’s Correlation Coefficient, r

• Positive Correlation

• Negative Correlation

• Regression

Specific statistical methods for finding “line of best fit” for 1 response (dependent) numerical variable based on 1 or more explanatory (independent) variables

• Correlation

• Pearson’s Correlation Coefficient, r

• Positive Correlation

• Negative Correlation

• Regression

1

• 1

• 0

• -1

2

• 1

• 0

• -1

3

• 1

• 0

• -1

1

• 0.9

• 0.5

• 0.25

2

• 0.9

• 0.5

• 0.25