1The following are the closing prices of IBM stock in U.S

Nov. 9115.53

Nov.10117.91

Nov. 11117.20

Nov.12114.50

Nov.13116.85

Calculate the HPR's and HPY's of each day given the information above

2. Given the example above; calculate the arithmetic mean of both the closing prices and HPY's. Also calculate the geometric mean (available in Excel) of closing prices and HPY's

3. Calculate the variance and standard deviationof IBM in the example above both for closing prices and HPY's (with respect to arithmetic means)