For which of the following applications would you use the geometric average instead of the arithmetic average? Measuring the height of a group of Cal Poly students to get an estimate of the average height across the entire campus Using 10 years of crop yield data to calculate the yield you expect to achieve next year. Using data on the number of students at Cal Poly in 2000 and in 2016 to calculate the average annual enrollment growth at the University Using the last 20 years of annual stock market return data to calculate the annual return that we expect next year. Suppose you want to construct a portfolio using stocks X and Y. Which of the following is true about the standard deviation of the portfolio. The standard deviation of the portfolio will be higher than the average of the standard deviation of the individual stocks. The standard deviation of the portfolio will not be higher than the standard deviation of both individual stocks, The standard deviation of the portfolio will be lower than the average of the standard deviation of the individual stocks. We can't say anything about the standard deviation of the portfolio without the correlation coefficient The standard deviation of the portfolio will be lower than the standard deviation of both individual stocks