Betas are calculated as the slope of the “characteristic” line, which is the regression line showing the relationship between a given stock and the general stock market.
Show the graph with the regression results. Point out that the beta is the slope coeeficient, which is 0.83. State that an average stock, by definition, moves with the market. Beta coefficients measure the relative volatility of a given stock relative to the stock market. The average stock’s beta is 1.0. Most stocks have betas in the range of 0.5 to 1.5. Theoretically, betas can be negative, but in the real world they are generally positive.
In practice, 4 or 5 years of monthly data, with 60 observations, would generally be used. Some analysts use 52 weeks of weekly data. Point out that the r2 of 0.36 is slightly higher than the typical value of about 0.29. A portfolio would have an r2 greater than 0.9.