Lesson 8

1. The chief aim of sampling is to be able to select

simple

random samplesa

sample whose statistics will accurately portray an unknown
population parametera

sample whose parameters will accurately portray an unknown
population statistica

sample whose statistics will accurately portray a known
population parametera

sample whose unknown statistics will accurately portray a
know parameter

2. A study population is

the

theoretical and hypothetical aggregation of all elements as
defined for a given

surveythe

theoretically specified aggregation of survey elementsthat

aggregation of elements from which the sample is actually
selectedthat

aggregation or set of elements considered for selection in
some stage of

samplingthat

aggregation of elements from which information is
collected

3. The unit about which information is collected and

that provides the basis of analysis is called a(n)

universesampling

unitstatisticsampling

frameelement

4. In a situation of perfect homogeneity there is little

need to be concerned with careful sampling procedures.

TureFalse

5. The size of the population must be taken into

account when deciding on sample size.

TrueFalse

6. Non probability sampling

always

produces samples that possess distorted characteristics
relative to the

populationdenies

the researche the use of statistical theory to estimate the
probability of

correct inferencesshould

never be used under any circumstancesincludes

stratified samplingrequires

the use of sampling frames

7. Sample all the students in your research methods

class. What kind of sampling design are you using?

simple

random samplingquota

samplingcluster

samplingstratified

samplingreliance

on available subjects

8. Drawing a judgemental sample

allows

researchers to use their prior knowledge about the
topic.Enlists

the aid of uninformed respondentsResults

in a sample that has no researcher biasEnsures

a representative sample.Requires

the development of a quota matrix

9. If a field researcher wanted to learn a political

organization’s pattern of recruitment over time, the
researcher might begin by

interviewing a fairly recent recruit and ask who introdused
that person to the

organization. Then the researcher might interview the person
named and ask who

introduced that person to the political organization. This
would be an example

of

snowball

sampling.Systematic

samplingDeviant

cases samplingAccidental

samplingQuota

sampling’

10. Professor Hall was planning to do a field study of

hitchhikers. Hall wanted to be sure that persons representing
all different

age, racial, and sex categories were included in the sample
of hitchhikers.

What kind of sampling scheme would you recommend?

deviant

cases.Quota

samplingStratified

samplingSnowball

samplingCluter

sampling

11. A researcher discovers that in a particular city

10% of the households are headed by a single person and that
90% of the

families are husband-wife families. The researcher sends out
interviewers an

tells them to conduct 80 interviews and that 10% of these
interviews should be

with families that are headed by a single person, and 90%
should be with

husband-wife families. This researcher is using

simple

random samplingquota

samplingcluster

samplingstratified

samplingaccidental

sampling

12. In general, as sample size increases

the

standard error increases in sizethe

standard error decreases in sizethe

standard error will remain the same regardless of changes in
sample sizethe

standard error is a constantthe

standard error fluctuates in size

13. Sampling error is reduced through an increase in

the sample size and an increased homogeneity of the elements
being sampled.

TrueFalse

14. Probability samples are advantageous to the

researcher because

the

method by which they are selected limits consious and
unconscious sampling biasthe

accuracy or representativeness of the sample can be
estimatedthey

are perfectly representative of the population from which
they are drawnall

of these choices indicate the advantages

of probability samplingthe

method by which they are selected limits conscious and
unconscious sampling

bias and the accuracy or representativenes of the sample can
be estimated

15. A summary description of a given variable in a

survey sample is called a

variableparameterconfidence

levelconfidence

intervalstatistic

16. If two samples of the same size are drawn from the

same population using simple random sampling, it follows that
they will have

the same statistics.

TrueFalse

17. Generally, the more heterogeneous the population,

the more beneficial it is to use stratified sampling.

True

False

18. Stratification represnets a modification to rather

than an alternative to simple random sampling and systematic
sampling.

True

False

19. A stratified sample is more likely to be

representative on several variables than is a simple random
sample.

TrueFalse

20. You want to select a sample of 250 people from a

population of 30,000. To use the table of random numbers you
need to work with

a

250

digit number3-

digit number4-

digit number5-

digit number6-

digit number

21. A sampling interval of 5 was used to select a

sample from a population of 1000. How many elements are to be
in the sample?

5501002001000

22. Every kth element in a list is chosen for inclusion

in the sample in

simple

random samplingsystematic

samplingdisproportionate

samplingcluster

samplingstratified

sampling

23. Periodicity is particularly important in

Simple

random samplingAvailability

samplingStratified

samplingQuota

samplingSystematic

sampling

24. You are doing research on hospital

personnel-orderlies, technicians, nurses, and doctors. You
want to be sure you

draw a sample that has cases in each of the personnel
categories. You want to

use probability sampling/ An appropriate strategy would be

simple

random samplingquota

samplingcluster

samplingstratified

samplingaccidental

sampling

25. Stratifying a population prior to drawing a sample

generally

occurs when the variables used to stratify are known to be
associated with the

dependent variableeliminates

the need for simple random samplingis

most useful for studying a homogeneous

populationeliminates

the need for probabiity samplingis

an alternative systematic sampling

26. A disadvantage of stratified sampling is that it

denies

you the use of probability theoryrequires

you to have some prior knowledge about the elements in the
population prior to

drawing the sampleusually

increases the standard errorusually

requires samples that are larger in size than those required
by simple random

samplingnone

of these choices is a disadvantage of stratified sampling

27. Multistage sampling design tend to have smaller

sampling errors than single-stage sampling designs..

TrueFalse

28. To ensure a sufficient number of cases from strata

of varying sizes, researchers use.

simple

random samplingsystematic

samplingproportionate

samplingdisproportionate

samplingquota

sampling

29. Disproportionate sampling and weighting are used by

the researcher

to

ensure a sufficient number of cases in each of the sample
subpopulationsto

give a proportionate representation to each sample elementto

procide a representative picture of the total populationto

handle situations involving the errors and approximation that
are often

inherent in complex, multistage designsall

of these choices are correct

30. Professor Alec O. Howlick is studying the incoming

(freshmen) student drinking behavior at Boozemen State
University in Boozemen,

Kansas. Every incoming freshmen is required to have a
university email address.

After obtaining a list of all incoming freshmen students
email addresses, he

numbered every email address from 1 to 4,000. Using a
random-number table, he

obtained a sample of 200 freshman email addresses. He then
emailed students

requesting them to take an online survey. He also had two
follow-up email

reminders. A total of 180 students took the online survey.

(1) What is Howlick’s sampling frame?

a. the drinking behavior of students

b. incoming freshmen telephone numbers

c. student freshmen email addresses

d. Boozemen State University

(2) What is Drunkman’s population?

a. all students living in Boozemen, Kansas

b. all students enrolled in

Boozemen State University

c. students who drink alcohol in Boozemen, Kansas

d. all incoming freshmen at Boozemen State University

(3) What type of sampling did Professor Howlick

use?

a. stratified random sample

b. simple random sample

c. cluster sample

d. sequential sample

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