Select two stock series and download daily data for the calendar year Dec 30, 2019, through Dec 31, 2020, from yahoo finance, construct a set of continuously compounded returns, and subdivide the data into two subsamples to analyze the forecasting performance of your model. Then using the first subsample, perform a time-series analysis of these returns. The analysis should include

(a) An examination of the autocorrelation and partial autocorrelation functions.