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Value at Risk example NEOMA Corrected

Normal distribution
Matière

Quantitative Methods

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Value at Risk analysis

The daily return of the asset price X follows a normal distribution with mean -0 02 and

standard deviation 0. What is the probability that the daily return falls below -0?

푝(푟푒푡푢푟푛<−0)= 푝(푧<

(

−0+ 0.

)

0.

)= 푝(푧<−1)= 2%

What is the probability that the daily return overshoot above 0?

푝(푟푒푡푢푟푛> 0)= 푝

(

푧>

( 0 .08+ 0)

0.

)

= 푝(푧> 1)= 5%

The daily return of the asset price Y follows a normal distribution with mean 0.

Considering that, the probability that a daily return falls below -0 is 10% what is the

standard deviation of the distribution?

(

푟푒푡푢푟푛<−0.

)

= 10%= 푝 (푧<

(−0−0)

)= 10% → −1=

(−0−0)

→ 휎=

(−0)

−1.

= 0.

Which asset is more risky X or Y. Please explain!

The asset Y is twice more risky than asset X given that the standard deviation is double!

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Value at Risk example NEOMA Corrected

Matière: Quantitative Methods

39 Documents
Les étudiants ont partagé 39 documents dans ce cours
Ce document a-t-il été utile ?
Value at Risk analysis
The daily return of the asset price X follows a normal distribution with mean -0.002 and
standard deviation 0.05. What is the probability that the daily return falls below -0.10?
𝑝(𝑟𝑒𝑡𝑢𝑟𝑛<−0.10)=𝑝(𝑧<(−0.10+0.002)
0.05 )=𝑝(𝑧<−1.96)=2.5%
What is the probability that the daily return overshoot above 0.08?
𝑝(𝑟𝑒𝑡𝑢𝑟𝑛>0.08)=𝑝(𝑧>(0.08+0.002)
0.05 )=𝑝(𝑧>1.64)=5%
The daily return of the asset price Y follows a normal distribution with mean 0.001.
Considering that, the probability that a daily return falls below -0.127 is 10% what is the
standard deviation of the distribution?
𝑝(𝑟𝑒𝑡𝑢𝑟𝑛<−0.127)=10%=𝑝(𝑧<(−0.127−0.001)
𝜎)=10% −1.28=(−0.127−0.001)
𝜎𝜎 =
(−0.128)
−1.28 =0.10
Which asset is more risky X or Y. Please explain!
The asset Y is twice more risky than asset X given that the standard deviation is double!