A stock's return has the following distribution: Demand for the Company's Products Probability of This Demand Occurring Rate of Return if This Demand Occurs (%) Weak 0.1 -40% Below average 0.2 -6 Average 0.4 17 Above average 0.2 20 Strong 0.1 50 1.0 Calculate the stock's expected return. Round your answer to two decimal places. % Calculate the standard deviation. Round your answer to two decimal places.