This document provides instructions to calculate statistics related to a linear regression model. It asks the user to: (1) make an Excel worksheet to calculate sums of squares for x, y, and xy using provided data; (2) use formulas to calculate the slope and intercept, rounding to 3 decimal places; (3) make another worksheet to calculate sums of squares for error, regression, and total using the estimated slope and intercept, rounding final answers to 3 decimal places; and (4) calculate the R-squared value, rounding to 4 decimal places.