Here are the returns on two stocks. Digital Cheese Executive Fruit January +18 +8 February -4 + 1 March +6 +5 April +8 + 16 May -5 + 2 June +4 +6 July -3 -4 August -9 -3 Required: a-1. Calculate the variance and standard deviation of each stock. a-2. Which stock is riskier if held on its own? b. Now calculate the returns in each month of a portfolio that invests an equal amount each month in the two stocks. c. Is the variance more or less than halfway between the variance of the two individual stocks?

Essentials Of Investments
11th Edition
ISBN:9781260013924
Author:Bodie, Zvi, Kane, Alex, MARCUS, Alan J.
Publisher:Bodie, Zvi, Kane, Alex, MARCUS, Alan J.
Chapter1: Investments: Background And Issues
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Here are the returns on two stocks. Digital Cheese Executive Fruit January
+18 + 8 February -4 + 1 March +6 +5 April +8 + 16 May -5 + 2 June
+4 + 6 July -3 -4 August -9 -3 Required: a-1. Calculate the variance and
standard deviation of each stock. a-2. Which stock is riskier if held on its own? b.
Now calculate the returns in each month of a portfolio that invests an equal
amount each month in the two stocks.c. Is the variance more or less than
halfway between the variance of the two individual stocks?
Transcribed Image Text:Here are the returns on two stocks. Digital Cheese Executive Fruit January +18 + 8 February -4 + 1 March +6 +5 April +8 + 16 May -5 + 2 June +4 + 6 July -3 -4 August -9 -3 Required: a-1. Calculate the variance and standard deviation of each stock. a-2. Which stock is riskier if held on its own? b. Now calculate the returns in each month of a portfolio that invests an equal amount each month in the two stocks.c. Is the variance more or less than halfway between the variance of the two individual stocks?
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