When the beta of an equity is calculated using monthly returns, there is a debate over the number of months that should be used in the calculation. Rework the previous questions using the last 60 months of returns. How does this answer compare with what you calculated previously? What are some arguments for and against using shorter versus longer periods? Also, you’ve used monthly data, which are a common choice. You could have used daily, weekly, quarterly or even annual data. What do you think are the issues here?