Problem 1. You calculated that the average return of your portfolio is 7% and the standard deviation is 23%, what is the value at risk (VaR) at 5% for your portfolio?

Problem 2. You have been following a stock for 3 months and the following is its past return

Year 1: 12%

Year 2: 13%

Year 3: 6%

What is the standard deviation of the stock based on the historical data? (Put the answer in decimal points instead of percentage)