Econometrics 2

1- Estimate the CAPM (Ei − r = βi (EM − r )), assuming the risk free rate is the same for all days over each month (assume the monthly rate as daily rate). Interpret the result and comments on the reliability of the result by doing all diagnoses tests.

2-Explain why it is more reasonable to use daily return rather than stock price based on the properties of time series. This should be based on reasonable tests of time series of return and stock prices regarding stationarity and forecasting based on your firms and index.