In each of Exercise,

a. Find the regression equation for the data points. Use the defining formulas in Definition 4.4 to obtain Sxx and Sxy.

b. Graph the regression equation and the data points.

The data points in Exercise 4.43

Exercise 4.43

The document Arizona Residential Property Valuation System, published by the Arizona Department of Revenue, describes how county assessors use computerized systems to
value single-family residential properties for property tax purposes. On the WeissStats site are data on lot size (in acres) and assessed value (in thousands of dollars) for a sample of homes in a particular area.