Deck 10: Sampling

Question 1

The most important disadvantage of a convenience sample is that:

A)It takes a lot of time and effort to find respondents.
B)The research results cannot be generalized to the population.
C)Systematic biases are possible.
D)It is relatively expensive.

Answer 1

B

Question 2

The results of probability sampling are less generalizable than the results of non-probability sampling.

Answer 2

False

Question 3

The payroll of an organization would serve as the sampling frame if its members are to be studied.

Answer 3

True

Question 4

When samples are to be broken into subsamples,a minimal sample size of 10 is necessary for each category.

Question 5

If representativeness of the sample is critical for the study,which of the following sampling techniques would you choose?

A)Simple random sampling.
B)Judgement sampling.
C)Convenience sampling.
D)Quota sampling .

Question 6

Snowball sampling and judgement sampling are both non-probability sampling designs.

Question 7

The element or set of elements that is available for selection in some stage of the sampling process is the:

A)Sample.
B)Sampling unit.
C)Sampling frame.
D)Subject.

Question 8

In probability sampling all elements of a population have a known and equal chance of being chosen.

Question 9

Snowball sampling and quota sampling are both non-probability sampling techniques.

Question 10

The bigger the sample size,the better.

Question 11

When the properties of the population are not over-represented or under-represented in the sample,we will have a representative sample.

Question 12

A researcher who investigates the relationship between the loyalty program of a specific supermarket and the loyalty towards this supermarket,collects his data by questioning consumers who leave the specific supermarket on several daily periods.The sampling method used by this researcher is called:

A)Convenience sampling.
B)Simple random sampling.
C)Stratified sampling.
D)Quota sampling.

Question 13

Convenience sampling and quota sampling are examples of probability sampling.

Question 14

Cluster sampling is the least reliable and efficient among all probability sampling designs.

Question 15

The sampling frame is a (physical)representation of all the elements in the population from which the sample is drawn.

Question 16

Probability sampling designs are used when the representativeness of the sample is of importance in the interests of wider generalizability.

Question 17

From a statistical perspective,probability sampling is preferred over non-probability sampling.

Question 18

A researcher wants to investigate the relationship between the use of drugs and study results of students.He would like to generalize the results to the population.Which of the following sampling methods would usually be the best to use?

A)Stratified sampling
B)Judgement sampling
C)Simple random sampling
D)Quota sampling

Question 19

With systematic sampling the population is first divided into meaningful segments;thereafter,subjects are drawn in proportion to their original number in the population.

Question 20

Which of the following sampling designs is a form of non-probability sampling?

A)Systematic sampling.
B)Area sampling.
C)Quota sampling.
D)Cluster sampling.

Question 21

The type of probability and non-probability sampling designs that is chosen depends on:

A)The extent of generalizability desired.
B)The demands of time and other resources.
C)The purpose of the study.
D)All of the above.

Question 22

Non response error exists to the extent that those who did respond to your survey are different from those who did not on (one of the)characteristics of interest in your study.

Question 23

Which is the most correct statement? The required sample size,n,is a function of:
A)The variability in the population,precision or accuracy needed,confidence level desired,and type of sampling plan used.

A)Precision or accuracy needed,confidence level desired,and type of sampling plan used.
B)The variability in the population,precision or accuracy needed,and confidence level desired.
B)The variability in the population,precision or accuracy needed,and type of sampling plan used.

Question 24

As a sampling technique,qualitative research generally uses non-probability sampling as it does not aim to draw statistical inference.

Question 25

A sample size of 40 is large enough.

Question 26

The general rule in qualitative research is that you continue to sample until you are not getting any new information or are no longer gaining new insights.

Question 27

If we want more precision,or more confidence,or both,the sample size needs to be increased.

Question 28

Stratified samples are samples gathered in groups or chunks of elements that,ideally,are natural aggregates of elements in the population.

Question 29

Two important sources of non response are not-at-homes and refusals.