Least Squares Regression The least squares regression line based on sample data is y=+ hy is the slope of the line, or change in y for every unit change in x, and calculated as Caxy 111.21 and h, is the y-intercept calculated as = 9 - 11) 11. Over Linear Models 399 uz Using the following results from Chapter 2, SAN) N-1 - ' R-1 * - 70 - 7) Cwxy Cox) Example 11.1 Manufacturing Plant (Regression Line) The Rising Hills Manufacturing Company in Redwood Falls regularly collects data to monitor its operations. These data are stored in the data file Rising Hills. The number of workers, X, and the number of tablet, produced per hour for a sample of 10 workers is hown in Figure If management decides to employ 25 work, estimate the expected number of tables that are likely to be produced