Consider the stock price for each of the last 8 Fridays and the price of Vanguard’s Total Stock Market Index Fund for the last 8 Fridays. If you had $800 to invest, would it have been better to purchase $800 of the stock on the first Friday or invest $100 on each of the 8 Fridays? Please do this for comparison with United Parcel Services with that of VSTAX on yahoo finance.