ans please make sure they are correct

1. Stock QRS has the following returns for the past 6 years: 1a. What is Arithmetic Average? 1b. What is the Geometric Average? 1c. What is the variance? 1d. What is the standard deviation? 2. A stock will have a loss of 40 percent in a recession, a gain of 9 percent in a normal economy, and a gain of 28 percent in a boom. There is 10 percent probability of a recession, 70 percent probability of normal economy, and 20 percent probability of boom. 2a. What is the expected return of this stock? 2b. What is the standard deviation of the stock's returns (rounded to the nearest tenth of a percent)