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# Regression Equation: Provide the regression equation for the line of best fit us

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Regression Equation: Provide the regression equation for the line of best fit using the scatterplot from the Module Two assignment.

Determine r: Determine r and what it means. (What is the relationship between the variables?)

Determine the strength of the correlation (weak, moderate, or strong).

Discuss how you determine the direction of the association between the two variables.

Is there a positive or negative association?

What do you see as the direction of the correlation?

Examine the Slope and Intercepts: Examine the slope

and intercept

.

Draw conclusions from the slope and intercept in the context of this problem.

Does the intercept make sense based on your observation of the line of best fit?

Determine the value of the land only.

Note: You can assume, when the square footage of the house is zero, that the price is the value of just the land. This happens when x=0, which is the y-intercept. Does this value make sense in context?

Determine the R-squared Coefficient: Determine the R-squared value.

Discuss what R-squared means in the context of this analysis.

Conclusions: Reflect on the Relationship: Reflect on the relationship between square feet and sales price by answering the following questions:

Is the square footage for homes in your selected region different than for homes overall in the United States?

For every 100 square feet, how much does the price go up (i.e., can you use slope to help identify price changes)?

What square footage range would the graph be best used for?