1. In Yahoo Finance, find the monthly price data (Historical Price, HP) for stocks of Kellogg and IBM from January 2015 to April 2020. Compute the monthly returns, mean return, sample variance, sample standard deviation, sample covariance, and correlation statistics. Graph a monthly mean return and standard deviation frontier of the portfolios composed of these two stocks.

2. In Yahoo Finance, find the weekly prices from 09/01/2017 to 08/31/2020 for two Vanguard funds the Vanguard Index 500 fund (symbol VFINX) and the Vanguard High-Yield Corporate Bond fund (VWEHX). The first of these funds tracks the Standard and Poors 500, and VWEHX is a junk-bond fund. Compute the weekly mean returns, sample variance, sample standard deviation, sample covariance, and correlation statistics. Graph a weekly mean return and standard deviation frontier of the portfolios composed of these two funds.