A Stock Portfolio Consists of Two Stocks X and Y

question 36

Multiple Choice

A stock portfolio consists of two stocks X and Y.Their daily closing prices are correlated random variables with variances σX2 = 3.51 and σY2= 5.22,and covariance σXY = −1.55.What is the standard deviation of the sum of the closing prices of these two stocks?

• A)5.63
• B)7.18
• C)8.73
• D)2.68

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Definitions:

Verbal Memory

The capacity to remember words and other abstract concepts that are primarily language-based.

Visuospatial Memory

The ability to remember visual and spatial information, including the relationship between objects in a space.

Implicit Memory

A type of long-term memory that does not require conscious thought to retrieve and can influence thoughts and behaviors without explicit awareness.

Alzheimer Disease

A gradually worsening disorder that leads to the degeneration of nerve cells, marked by a decline in memory, cognitive abilities, and alterations in personality.