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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

The members of a population are numbered 1-5.

(a) List the 10 possible samples (without replacement) of size 3 from this population.

(b) SRS of size 3 is taken from the population, what are the chances of selecting 1, 3, and 5? Explain your answer.

(c) Use Table I in Appendix A to obtain an SRS of size 3 from the population. Start at the single-digit number in line number 5 and column number 20, read down the column, up the next, and so on.

British Backpacker Tourists.Research by G. Visser and C. Barker in " A Geography of British Backpacker Tourists in South Africa " (Geography, Vol . 89, No. 3, pp . 226-239) reflected on the impact of British backpacker tourists visiting South Africa. A sample of British backpackers was interviewed. The information obtained from the sample was used to construct the following table for the age distribution of all British backpackers. Classify this study as descriptive or inferential, and explain your answer.

Before planning and conducting a study to obtain information, what should be done?

Ballistic Fingerprinting. In an on-line press release, ABCNews.com reported that "...73 percent of Americans... favor a law that would require every gun sold in the United States to be test-fired first, so law enforcement would have its fingerprint in case it were ever used in a crime."

(a). Do you think that the statement in the press release is inferential or descriptive? Can you be sure?

(b). Actually, ABCNews.com conducted a telephone survey of a random national sample of 1032 adults and determined that 73% of them favored a law that would require every gun sold in the United States to be test-fired first, so law enforcement would have its fingerprint in case it were ever used in a crime. How would you rephrase the statement in the press release to make clear that it is a descriptive statement? an inferential statement?

Quick Vote. TalkBack Live, a production of CNN, conducted on-line surveys on various issues. One survey, called a QuickVote, of 680 people asked "Would you vote for a third-party candidate?" Of the 680 people surveyed, 608 ( 89.4 % ) responded "yes" and 72 ( 10.6 % ) responded "no." Beneath the vote tally, the following statement regarding the sampling procedure was found:

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Discuss the preceding statement in light of what you have learned in this chapter.
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