Unit 4 Test Review

Another name for Line of Best Fit is...

• Straight Line

• Linear Line

• Regression Line

This implies that one variable directly affects another variable

• Causation

• Association / Correlation

The correlation coefficient r is a value between

• 0 and 1

• 0 and 100

• -1 and 1

• -2 and 2

Residuals are . . . 

• possible models not explored by the researcher

• variation in the response variable that is explained by the model

• data collected from individuals that is not consistent with the rest of the group

• the difference between the observed response and the values predicted by the model

Another word for Association is...

• Causation

• Relationship

• Correlation

Which equation do you need to put into Desmos to find the regression line?

• 
• 

How do you calculate the residual value?

• Actual-Predicted

• Predicted-Actual

What does the r-value represent?

• Correlation Coefficient

• Residual

• Slope

• Y-intercept

How would you describe a residual plot that reveals that the regression line fits the data well?

• All of the data points clustered around the y-axis

• All of the data points clustered at the top of the graph

• The data points make a U shape

• The data points clustered around the x-axis

Describe the correlation in the graph shown

• Weak Negative

• Strong Positive

• Strong Negative

• Weak Positive