Stocks - calculate Expected Return and Standard Deviation, etc. Please show how to enter it into a calculator. Our teacher wants us to use L1,etc. and Stat - 1-Vars, to get the answers. I'm just confused how to do it. Please help me.

Based on the following data, calculate the expected return and the standard deviation of returns for each stock.L 2. State of the Econom Recession Normal Growth Boom Probability_Stock ARate of ReturnStock B Rate of Return 5% 7% 11% 0.25 0.45 0.3 -20% 13% 3"5% 3. Based on the following data; (a) calculate the expected return and the standard deviation of returns for each stoclk Probability State of the Econom Recession Normal Growth Boom Stock A Rate of Return Stock B Rate of Return 0.2 0.65 0.15 8% 8% 24% -20% 20% 60% (b) Calculate the expected return and the standard deviation on the portfolio, where the portfolio is formed by investing 50% of the funds in Stock A and the rest in stock B. 4. Use the following data: State of the Economy Probability Stock A: Return Stock B: Return 30% 15% 15% -20% 45% 15% -15% 0.2 Boom Good Poor Bust 0.35 0.25 0.2 (a) If a portfolio is formed by investing 40% of the funds in stock A and 60% in B; what would be the expected return on the portfolio? (b) What would be the standard deviation of the above portfolio