Reading 9: Common Probability Distributions - LOS f, (Part only, applies, style, black

mayanfang1

Q1. A multivariate distribution:

A)     applies only to binomial distributions.

B)     specifies the probabilities associated with groups of random variables.

C)     gives multiple probabilities for the same outcome.

Q2. Which of the following would least likely be categorized as a multivariate distribution?

A)   The days a stock traded and the days it did not trade.

B)   The return of a stock and the return of the DJIA.

C)   The returns of the stocks in the DJIA.

mayanfang1

答案和详解如下：

Q1. A multivariate distribution:

A)     applies only to binomial distributions.

B)     specifies the probabilities associated with groups of random variables.

C)     gives multiple probabilities for the same outcome.

Correct answer is B)

This is the definition of a multivariate distribution.

Q2. Which of the following would least likely be categorized as a multivariate distribution?

A)   The days a stock traded and the days it did not trade.

B)   The return of a stock and the return of the DJIA.

C)   The returns of the stocks in the DJIA.

Correct answer is A)

The number of days a stock traded and did not trade describes only one random variable. Both of the other cases involve two or more random variables.

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