You observe the the price of a volatile stock over 100 trading days and record that it either doubles or halves each day with equal likelihood. To be clear, the stock doubles (daily return of 100%) on a total of 50 days and gets cut in half (daily return of -50%) on 50 days during the 100-day observation period. What is an accurate estimate for the stock's daily realized volatility? 70% 48% 0% 100% 50%