Residuals and Correlation Coefficient

• This residual plot represents a linear fit.
• This residual plot represents a nonlinear fit.
• This residual plot represents no fit.

Estimate the correlation coefficient for this scatterplot.

• r = 1.2

• r = 0.89

• r = 0

• r = -0.89

Estimate the correlation coefficient for this scatterplot.

• r = -0.9

• r = 1

• r = 0.9

• r = -1

Which colored line shows the line of best fit for the scatter plot?

• Black

• Orange

• Red

• Blue

Given the following Scatter Plot, select the option that is most likely the r value.

What is the value of the correlation coefficient?

• 0.891

• -0.891

• 0.875

• 0.943

• -0.943

If a linear model is applied to these data, which statement best describes the correlation coefficient?

• It is close to −1.

• It is close to 1.

• It is close to 0.

• It is close to 0.5.

Use Desmos to generate a linear regression model. What is the value of the correlation coefficient, r?

• 0.8458

• 0.6918

• 3.19403

• 75.9403

The table shows 6 students' overall averages and their averages in their math class.

If a linear model is applied to these data, which statement best describes the correlation coefficient?

• It is close to −1.

• It is close to 1.

• It is close to 0.

• It is close to 0.5.

Question 50

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