Regression Correlation

True or False: The Least-Squares Regression line is the only choice for a regression equation.

• True

• False

Find the equation of the Line of Best Fit from the data set. 

• y = 0.892x - 1.82

• y = 1.82x - 5.02

• y = 0.796x + 5.02

• y = 1.82x + 5.02

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

Find the equation of the line of best fit for this table.

• y = -0.18x + 6.47

• y = 6.47x - 0.18

• y = 0.04x - 0.19

• y = -0.18x - 0.19

A restaurant sells pizza for the prices in the data table. Calculate the linear regression equation of the data.

• y = 1.5x + 12

• y = 12x + 1.5

• y = 0.67x - 8

• y = -8x + 0.67

Which sentence describes the relationship shown on this scatter plot?

• As the temperature decreases, the visitors increase. 

• As the temperature increases, the number of visitors increases. 

• As the visitors increase, the temperature decreases. 

• No correlation

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books.  Use the trend line to predict how many chapters would be in a book with 180 pages. 

• 12 chapters

• 15 chapters

• 18 chapters

• 21 chapters

Which scatter plot shows no relationship?

• Graph A

• Graph B

• Graph C

• Graph D

Use Desmos to determine the line of best fit for the data shown.

Which scatter diagram shows the strongest positive correlation?

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