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tT
发表于 2010-4-12 14:49 | 只看该作者

Reading 8: Probability Concepts-LOS i习题精选

increase, investment, class, discount, div
Session 2: Quantitative Methods: Basic Concepts
Reading 8: Probability Concepts

LOS i: Explain the use of conditional expectation in investment applications.

 

 

 

An analyst announces that an increase in the discount rate next quarter will double her earnings forecast for a firm. This is an example of a:

A)

use of Bayes' formula

B)

conditional expectation.

C)

joint probability.

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bmaggie

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2#
发表于 2010-4-12 14:49 | 只看该作者

An analyst announces that an increase in the discount rate next quarter will double her earnings forecast for a firm. This is an example of a:

A)

use of Bayes' formula

B)

conditional expectation.

C)

joint probability.



This is a conditional expectation. The analyst indicates how an expected value will change given another event.

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bmaggie

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3#
发表于 2010-4-12 14:50 | 只看该作者

A conditional expectation involves:

A)
 calculating the conditional variance.
B)
 determining the expected joint probability.
C)
 refining a forecast because of the occurrence of some other event.

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bmaggie

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4#
发表于 2010-4-12 14:51 | 只看该作者

A conditional expectation involves:

A)
 calculating the conditional variance.
B)
 determining the expected joint probability.
C)
 refining a forecast because of the occurrence of some other event.


Conditional expected values are contingent upon the occurrence of some other event. The expectation changes as new information is revealed.

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zaestau

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5#
发表于 2010-4-26 23:33 | 只看该作者
c

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