Assume that your cousin holds just one stock, Eastman Chemical Bonding (ECB), which he thinks has very little risk. You agree that the stock is relatively safe, but you want to demonstrate that his risk would be even lower if he were more diversified. You obtain the following returns data for Wilder's Creations and Buildings (WCB). Both companies have had less variability than most other stocks over the past 5 years. Measured by the standard deviation of returns, by how much would your cousin's risk have been reduced if he had held a portfolio consisting of 60% in ECB and the remainder in WCB? (Hint: Use the sample standard deviation formula.)   Year ECB WCB   2011   40.00%   40.00%   2012 −10.00%   15.00%   2013   35.00%   −5.00%   2014   −5.00% −10.00%   2015   15.00%   35.00% Average return =   15.00%   15.00% Standard deviation =   22.64%   22.64%   a. 3.29% b. 3.46% c. 3.65% d. 3.84% e. 4.03%

EBK CONTEMPORARY FINANCIAL MANAGEMENT
14th Edition
ISBN:9781337514835
Author:MOYER
Publisher:MOYER
Chapter8: Analysis Of Risk And Return
Section: Chapter Questions
Problem 3P
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Assume that your cousin holds just one stock, Eastman Chemical Bonding (ECB), which he thinks has very little risk. You agree that the stock is relatively safe, but you want to demonstrate that his risk would be even lower if he were more diversified. You obtain the following returns data for Wilder's Creations and Buildings (WCB). Both companies have had less variability than most other stocks over the past 5 years. Measured by the standard deviation of returns, by how much would your cousin's risk have been reduced if he had held a portfolio consisting of 60% in ECB and the remainder in WCB? (Hint: Use the sample standard deviation formula.)

 

Year

ECB

WCB

 

2011

  40.00%

  40.00%

 

2012

−10.00%

  15.00%

 

2013

  35.00%

  −5.00%

 

2014

  −5.00%

−10.00%

 

2015

  15.00%

  35.00%

Average return =

  15.00%

  15.00%

Standard deviation =

  22.64%

  22.64%

 

a. 3.29%
b. 3.46%
c. 3.65%
d. 3.84%
e. 4.03%
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