Do this for two sample periods: 7/1926-12/1963, and 1/1964- 08/2017 (in each case the beta should be computed using the whole subsample, although in practice we use shorter time periods e.g. 5 years). How well does the CAPM work in the first sample? What happens in the second sample?

Surface area is the sum of the areas of all faces (or surfaces) on a 3D shape. A cuboid has 6 rectangular faces. To find the surface area of a cuboid, add the areas of all 6 faces. We can also label the length (l), width (w), and height (h) of the prism and use the formula, SA=2lw+2lh+2hw, to find the surface area

Step-by-step explanation: