# Lesson 6: Relationships Between Measurement Variables

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### Assignments

• Complete the 'Poll Monday' and 'Thinking Tuesday' Activities for Lesson 6.
• Read Chapters 10 and 11 in the text.
• Work through the Lesson 6 online notes that follow.
• Complete the Practice Questions and Lesson 6 Assignment.

### Learning Objectives

Chapters 10 and 11

After successfully completing this lesson you should be able to:

• Explain the major features of correlation.
• Identify the key features of a regression line.
• Apply what it means to be statistically significant.
• Find the predicted value of y for given choice of x on a regression equation plot.
• Critique evidence for the strength of an association in observational studies.

### Terms to Know

From Chapters 10 and 11

• correlation
• straight line (linear) relationship
• positive correlation (association)
• negative correlation (association)
• statistically significant
• outlier
• explanatory (predictor) variable (x)
• response variable (y)
• least squares
• regression equation (line)
• extrapolation