The following table presents 10 years of return data for the stock of Glenwood City Properties and for a market index. Plot the returns of Glenwood City and the market index on a graph with the market index's returns on the horizontal axis and Glenwood City's returns on the vertical axis. Draw your best guess of the market model through these points. Examine the graph, and estimate the beta of Glenwood City stock.

Year 1 2 3 4 5 6 7 9 10 Glenwood City 8.1% 3.0 5.3 1.0 -3.1 -3.0 5.0 3.2 1.2 1.3 Market Index 8,0% 0.0 -4.9 5.0 -8.9 10.1 5.0 1.5 2.4