Part 1 of 1 Question 1 of 18
5.0 Points
A numerical finding computed from sample data is called a:
A. sampling frame
B. margin of error
C. confidence interval
D. statistic
E. parameter
F. standard error
G. quota
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Question 2 of 18
5.0 Points
A numerical finding that is valid for the entire population is a::
A. standard error
B. confidence interval
C. quota
D. margin of error
E. parameter
F. statistic
G. sampling frame
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Question 3 of 18
5.0 Points
The range (from lowest to highest) within which the sample statistic might vary from the
population parameter is called the
A. margin of error
B. sampling frame
C. parameter
D. standard error
E. statistic
F. quota
G. confidence interval
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Question 4 of 18
5.0 Points
Which is equal to half a margin of error:
A. statistic
B. parameter
C. confidence interval
D. margin of error
E. sampling frame
F. standard error
G. quota
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Question 5 of 18
5.0 Points
Which is used in a form of non-probability sampling:
A. statistic
B. parameter
C. confidence interval
D. margin of error
E. sampling frame
F. standard error
G. quota
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Question 6 of 18
5.0 Points
We can be 95% sure that our sample finding is within one _____________ of the true
population number.
A. statistic
B. parameter
C. confidence interval
D. margin of error
E. sampling frame
F. standard error
G. quota
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Question 7 of 18
5.0 Points
If we divide the population into subgroups of interest and take random samples of each
subgroup we have a
A. simple random sample
B. multistage cluster sample
C. stratified sample
D. systematic sample
E. quota sample
F. subsample
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Question 8 of 18
5.0 Points
If we do not have a list of the population, so we sample subgroups such as blocks or
census tracts and then sample individuals within selected blocks or census tracts we have
a
A. simple random sample
B. multistage cluster sample
C. stratified sample
D. systematic sample
E. quota sample
F. subsample
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Question 9 of 18
5.0 Points
If we go down an alphabetized list of names and take every twentieth name we have a
A. simple random sample
B. multistage cluster sample
C. stratified sample
D. systematic sample
E. quota sample
F. subsample
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Question 10 of 18
10.0 Points
A survey has 600 respondents. What is the margin of error? Give the answer as a percent
with one number to the right of the decimal.For example 6.9% or 12.2%
1.
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Question 11 of 18
5.0 Points
A researcher needs a margin of error of 5% in a survey. How large a sample is needed?
1.
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Question 12 of 18
5.0 Points
A researcher is studying the Hispanic, African American and white populations in a
county with 300,000 residents. 250,000 are white, 50,000 are Hispanic and 50,000 are
African Americans. The researcher wants a margin of error of 5% for each of the groups.
How large a sample is needed?
1.
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Question 13 of 18
10.0 Points
A survey is conducted with 437 respondents in a city with 160,000 residents. The mean
income reported for the sample is $25,321 with a standard deviation of $270. What is the
margin of error for this mean score. Report the results with a dollar sign and two numbers
after the decimal point, e.g., $72.35
1.
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Question 14 of 18
5.0 Points
Nonprobability sampling:
A. always produces samples that possess distorted characteristics relative to the
population
B. denies the researcher the use of statistical theory to estimate the probability of
correct inferences
C. should never be used under any circumstances
D. includes stratified sampling
E. requires the use of sampling frames
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Question 15 of 18
5.0 Points
In general, as sample size increases:
A. the standard error decreases in size
B. the standard error increases in size
C. the standard error will remain the same regardless of changes in sample size
D. the standard error is a constant
E. the standard error fluctuates in size
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Question 16 of 18
5.0 Points
Stratifying a population prior to drawing a sample:
A. generally occurs when the variables used to stratify are known to be associated
with the dependent variable
B. eliminates the need for simple random sampling
C. is most useful for studying a homogeneous population
D. eliminates the need for probability sampling
E. is an alternative systematic sampling
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Question 17 of 18
5.0 Points
This illustration represents
a:
A. simple random sample
B. multistage cluster sample
C. stratified sample
D. systematic sample
E. quota sample
F. subsample
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Question 18 of 18
5.0 Points
This illustration represents
a:
A. simple random sample
B. multistage cluster sample
C. stratified sample
D. systematic sample
E. quota sample
F. subsample
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