# Quiz 7: Sampling

Political Science

Q 1Q 1

A(n) ___________ is any subset of units collected in some manner from a population.
A) Sample
B) Estimator
C) Element
D) Sampling frame

Free

Multiple Choice

A

Q 2Q 2

__________________ are used to approximate the corresponding population values, or parameters.
A) Sample statistics

Free

Multiple Choice

A

Q 3Q 3

Characteristics of populations, such as averages, differences between groups, and relationships among variables that can be quantified as a number are called _______________.
A) Statistics
B) Estimators
C) (Population) parameters
D) Errors

Free

Multiple Choice

C

Q 4Q 4

A(n) ____________ is a single occurrence, realization, or instance of the objects or entities being studied.
A) Element, or unit of analysis is also acceptable
B) Statistic
C) Population parameter
D) Estimator

Free

Multiple Choice

Q 5Q 5

The particular population from which a sample is actually drawn is called a _____________.
A) Sampling frame
B) Sampling unit
C) Element
D) Sample bias

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Multiple Choice

Q 6Q 6

A ___________ is an entity listed in a sampling frame
A) Sampling frame
B) Sampling unit
C) Element
D) Sample bias

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Multiple Choice

Q 7Q 7

If a sampling frame is incomplete or inappropriate, ___________ will occur.
A) Sampling frame
B) Sampling unit
C) Element
D) Sample bias

Free

Multiple Choice

Q 8Q 8

A ____________ sample is one in which each element in the population has an unknown probability of being selected.
A) Probability
B) Nonprobability
C) Systematic
D) Stratified

Free

Multiple Choice

Q 9Q 9

A ___________ sample in which elements are selected from a list at predetermined intervals.
A) Probability
B) Nonprobability
C) Systematic
D) Stratified

Free

Multiple Choice

Q 10Q 10

A ________ sample is a probability sample in which the sampling frame initially consists of groups of elements.
A) Cluster

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Multiple Choice

Q 11Q 11

In a __________ sample, respondents are used to identify other persons who might qualify for inclusion in the sample.
A) Snowball

Free

Multiple Choice

Q 12Q 12

The mathematical term for the variation around the expected value is the _____________.
A) Standard error of the estimator, or standard error

Free

Multiple Choice

Q 13Q 13

A(n) _____________ is the discrepancy between an observed and a true value that arises because only a portion of a population is observed.
A) Standard error
B) Sampling error
C) Error in conjecture
D) Statistical error

Free

Multiple Choice

Q 14Q 14

A __________ sample is a probability sample in which elements sharing one or more characteristics are grouped, and elements are selected from each group in proportion to the group's representation in the total population.
A) Probability
B) Nonprobability
C) Systematic
D) Stratified

Free

Multiple Choice

Q 15Q 15

A(n) _____________ is a sample statistic based on sample observations that estimates the numerical value of a population characteristic, or parameter.
A) Standard error
B) Estimator
C) Element
D) Sampling frame

Free

Multiple Choice

Q 16Q 16

A _______________ sample is simply a sample for which each element in the total population has a known probability of being included in the sample.
A) Probability
B) Nonprobability
C) Systematic
D) Stratified

Free

Multiple Choice

Q 17Q 17

The major goal of statistical inference is to make supportable conjectures about the unknown characteristics of a
A) Population
B) Standard errors
C) Sample
D) Estimator

Free

Multiple Choice

Q 18Q 18

The mean of many independently and randomly chosen samples, their average or mean will equal the corresponding true, or population, quantity, no matter what the sample size is called the
A) Standard error
B) Normal value
C) Expected value
D) Population error

Free

Multiple Choice

Q 19Q 19

What are the advantages and disadvantages of using a sample instead of a population and vice versa?

Free

Essay

Q 20Q 20

Systematic sampling is a probability sampling method and therefore takes advantage of random assignment to avoid bias. In your answer, please identify and explain one scenario under which a systematic sampling technique would result in a biased sample.

Free

Essay

Q 21Q 21

What is a disproportionate stratified sample and why would you use one? In your answer, please include an example.

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