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Chapter 1: Q 1.1. (page 7)

Define the following terms:

(a) Population

(b) Sample

Short Answer

Expert verified

Part (a) Population is defined as the collection of all individuals or items under consideration.

Part (b) A sample is that part of the population from which information is collected.

Step by step solution

01

Part (a) Step 1. Given information.

The given term is "Population".

We have to define the given term "Population".

02

Part (a) Step 2. Define Population.

In a statistical study, Population is defined as the collection of all individuals or items under consideration.

Or we can say that population is an entire set from which a sample is drawn.

03

Part (b) Step 1. Given information.

The given term is "Sample".

We have to define the given term "Sample".

04

Part (b) Step 2. Define Sample.

In a Statistical study, a sample is that part of the population from which information is collected.

A sample is a subset of the population.

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Most popular questions from this chapter

The inferential procedures discussed in this book are intended for use with only one particular sampling procedure. What sampling procedure is that?

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?

Keno. In the game of keno, 20 balls are selected at random from 80 balls numbered 1-80. In Exercise 1.48 on page 16, you used simple random sampling to simulate one game of keno.

(a) Use systematic random sampling to obtain a sample of 20 of the 80 balls.

(b) Which method is easier: simple random sampling or systematic random sampling?

(c) Does it seem reasonable to use systematic random sampling to simulate one game of keno? Explain your answer.

In a designed experiment,

(a) what are the experimental units?

(b) if the experimental units are humans, what term is often used in place of experimental units?

Describe each of the following sampling methods and indicate conditions under which each is appropriate.

(a) Systematic random sampling

(b) Cluster sampling

(c) Stratified random sampling with proportional allocation
See all solutions

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