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Chapter 1: Q 1.11. (page 7)

In Exercises 1.7-1.12, classify each of the studies as either descriptive or inferential. Explain your answers.

Dow Jones Industrial Averages. From the Stock Performance Guide, published online by Istockl on the website 1Stock1.com, we found the closing values of the Dow Jones Industrial Averages as of the end of December for the years 2004 through 2013.

Short Answer

Expert verified

The given study is descriptive.

Step by step solution

01

Step 1. Given information.

The given statement is:

From the Stock Performance Guide, published online by Istockl on the website 1Stock1.com, the closing values of the Dow Jones Industrial Averages as of the end of December for the years 2004 through 2013 are shown in the given table.

02

Step 2. Classify the given study as either descriptive or inferential.

The given table in the question shows the closing values of the Dow Jones Industrial Averages as of the end of December for the years 2004 through 2013.

The given information about the closing values is in a summarized form.

Therefore, the given study is descriptive.

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Most popular questions from this chapter

In Exercises 1.92-1.97, we present descriptions of designed experiments. In each case, identify the

(a) experimental units

(b) response variable

(c) factor (s)

(d) levels of each factor:-

(e) treatments.

The Lion's Mane. In a study by P. M. West titled "The Lion's Mane" ( American Scientist, Vol. 93, No. 3, pp. 226-236), the effects of the mane of a male lion as a signal of quality to mates and rivals was explored. Four life-sized dummies of male lions provided a tool for testing female response to the unfamiliar lions whose manes varied by length (long or short) and color (blonde or dark). The female lions were observed to see whether they approached each of the four life-sized dummies.

Surveys that combine one or more of simple random sampling, systematic random sampling, cluster sampling, and stratified sampling employ what is called sampling.

Oklahoma State Officials. The five top Oklahoma state officials are displayed in Table 1.2 on page 11. Use that table to solve the following problems.

(a). List the 10 possible samples (without replacement) of size 3 that can be obtained from the population of five officials.

(b). If a simple random sampling procedure is used to obtain a sample of three officials, what are the chances that it is the first sample on your list in part (a)? the second sample? the tenth sample?

In a designed experiment, there are two factors. One factor has mlevels and the other factor has nlevels. Determine the number of treatments.

Hint: Refer to Exercise 1.87 or Exercise 1.88.

Explain two ways in which descriptive statistics and inferential statistics are interrelated.
See all solutions

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