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johnpaech johnpaech
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5 years ago
What is the variance on a portfolio that has $2000 invested in Duke Energy, $3000 invested in Microsoft, and $5000 invested in Wal-Mart stock?
Textbook 
Corporate Finance: The Core

Corporate Finance: The Core


Edition: 4th
Authors:
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EgorGruzdevEgorGruzdev
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5 years ago
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More solutions for this book are available here
COV   Duke   Microsoft   Wal-Mart
Duke   0.0568   -0.0193   0.0037
Microsoft   -0.0193   0.2420   0.1277
Wal-Mart   0.0037   0.1277   0.1413
         
Weights   0.2   0.3   0.5

XiXj   XDuke   XMicrosoft   XWal-Mart
XDuke   0.04   0.06   0.1
XMicrosoft   0.06   0.09   0.15
XWal-Mart   0.1   0.15   0.25

XiXjCOV(I,j)   Duke   Microsoft   Wal-Mart
Duke   0.002272   -0.00116   0.000367
Microsoft   -0.00116   0.021776   0.019153
Wal-Mart   0.000367   0.019153   0.035318
         
Var(P) =   0.096086      
Variance of a portfolio =
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johnpaech Author
wrote...
#2
4 years ago
You took a load off my back, thanks for answering correctly
wrote...
#3
2 years ago
.
wrote...
#4
2 years ago Edited: 2 years ago, 柏諦
thank
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