Is there a correlation between a house's square footage and its price?
Data collection: Find 20 houses for sale and record its selling price and its square footage.
Make a scatter plot of the square footage vs. the selling price. Does there seem to be a linear correlation? If so, would you classify the correlation as strong or weak.
Calculate the correlation coefficient and classify the correlation as strong or weak. How does this compare to your previous classification?
Find the equation of the regression equation. Use the regression equation to predict the sale price of a house with a square footage of 2000 square feet. Is this interpolation or extrapolation?