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标题: Reading 8: Probability Concepts-LOS i习题精选 [打印本页]

作者: bmaggie 时间: 2010-4-12 14:49 标题: [2010]Session 2:-Reading 8: Probability Concepts-LOS i习题精选

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.

作者: bmaggie 时间: 2010-4-12 14:49

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.

作者: bmaggie 时间: 2010-4-12 14:50

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.

作者: bmaggie 时间: 2010-4-12 14:51

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.

作者: zaestau 时间: 2010-4-26 23:33

c

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