Question

QUESTION 1

1. It is best to use probability sampling when

   	a.	trying to understand the context of people’s actions.
   	b.	studying a small number of cases.
   	c.	the population is unknown or not readily identifiable.
   	d.	the research objective is to estimate population characteristics.

10 points   

QUESTION 2

1. Which of the following describes a sampling distribution?

   	a.	distribution of individual responses in a single sample
   	b.	distribution of individual responses in a population
   	c.	probability distribution of individual responses in a single sample
   	d.	probability distribution of a sample statistic

10 points   

QUESTION 3

1. Knowledge of the sampling distribution of a statistic enables researchers to

   	a.	draw a smaller sample than ordinarily would be necessary.
   	b.	estimate the probable margin of error (MoE) of a sample statistic.
   	c.	calculate the population value.
   	d.	calculate the difference between a population value and a sample estimate.

10 points   

QUESTION 4

1. In the National Health and Social Life Survey, “all people aged 18 to 59 with adequate English proficiency living in households located in the 50 states and District of Columbia” describes the

   	a.	target population.
   	b.	sampling frame.
   	c.	sample.
   	d.	sampling distribution.

10 points   

QUESTION 5

1. Defining the population in a survey is a two-step process. The first step consists of defining the __________; the second step consists of constructing the __________.

   	a.	unit of analysis; target population
   	b.	target population; sampling frame
   	c.	sampling frame; sample design
   	d.	sampling design; sample

10 points   

QUESTION 6

1. For a survey of senior citizens, a copy of the annual city census is obtained, and 30,000 residents 65 years of age and older are identified. A total of 400 seniors is selected, of whom 250 are interviewed. There are __________ senior citizens in the sampling frame.

   	a.	30,000
   	b.	400
   	c.	250
   	d.	unknown number

10 points   

QUESTION 7

1. Which of the following is a source of coverage error?

   	a.	an incomplete sampling frame
   	b.	refusals to cooperate
   	c.	unreturned questionnaires
   	d.	random selection processes

10 points   

QUESTION 8

1. If the researcher is unable to obtain a list of the population or members of the population cannot be identified easily, then he or she must use a

   	a.	very large sample.
   	b.	representative sample.
   	c.	probability sample.
   	d.	nonprobability sample.

10 points   

QUESTION 9

1. You need a sample of 25 students to interview for a study of attitudes toward intercollegiate athletics, and so you interview the first 25 students to enter the campus center on a Monday morning. What kind of sample is this?

   		convenience sample
   		purposive sample
   		snowball sample
   		simple random sample

10 points   

QUESTION 10

1. To use stratified random sampling, the sampling frame must contain information on the stratifying variable.

   	a.	True
   	b.	False

Answer 1

1-(c):The population is unknown or not readily identifiable.

2-(d):Probability distribution of a sample statistic.

3-(b):Estimate the probable margin of error (MoE) of a sample statistic.

4-Target population::People of Columbia living in households.

Sampling Frame::All people aged 18 to 59 with adequate English proficiency.

Sample::people aged 18 to 59 with adequate English proficiency living in households located in the 50 states and District .

Sampling Distribution::

5-(b):Target population,Sampling frame.

6-(a):30000.

7-(a):An incomplete sampling frame.

8-(d):Nonprobability sample.

9-(a):Convenience sample.

10-(a):True.