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Scatter Diagrams Correlation Classifications

Scatter Diagrams Correlation Classifications Scatter Diagrams are used to demonstrate Correlation between two Correlation can be quantitative variables. 19. classified into three basic Regression Plot 18. categories 19. Often, this Correlation is 17 18. linear. Linear 17. Weight 16. Weight 16. This means that a straight 15 Nonlinear 15. 14. line model can be No Correlation 14. 13. 13. developed. 12. 12. 20 21 22 23 24. Length 20 21 22 23 24. Length chapter 5 # 1 chapter 5 # 2. Correlation Classifications Correlation Classifications Two variables may be correlated but not through Curvilinear Correlation a linear model.

Chapter 5 # 6 Linear Correlation • Negatively correlated variables vary as opposites • As the value of one variable increases the other decreases 0 10 20 30 40 4 3 2 Regression Plot Hours Worked Student GPA Chapter 5 # 7 Strength of Correlation • Correlation may be strong, moderate, or weak. • You can estimate the strength be observing the

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