Reading 7: Statistical Concepts and Market Returns - LOS statements, following, regarding, terms, white

mayanfang1

Q1. Which of the following statements regarding the terms population and sample is least accurate?

A)   A sample's characteristics are attributed to the population as a whole.

B)   A sample includes all members of a specified group.

C)   A descriptive measure of a sample is called a statistic.

Q2. Which of the following statements about statistical concepts is least accurate?

A)   A frequency distribution is a tabular display of data summarized into a relatively small number of intervals.

B)   A sample contains all members of a specified group, but a population contains only a subset.

C)   A parameter is any descriptive measure of a population characteristic.

[此贴子已经被作者于2008-12-31 16:18:04编辑过]

mayanfang1

答案和详解如下：

Q1. Which of the following statements regarding the terms population and sample is least accurate?

A)   A sample's characteristics are attributed to the population as a whole.

B)   A sample includes all members of a specified group.

C)   A descriptive measure of a sample is called a statistic.

Correct answer is B)

A population includes all members of a specified group. A sample is a portion, or subset of the population of interest.

Q2. Which of the following statements about statistical concepts is least accurate?

A)   A frequency distribution is a tabular display of data summarized into a relatively small number of intervals.

B)   A sample contains all members of a specified group, but a population contains only a subset.

C)   A parameter is any descriptive measure of a population characteristic.

Correct answer is B)

A population is defined as all members of a specified group, but a sample is a subset of a population.