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.

Accepted Answer

Convenience samples are not representative of the population as they are chosen based on availability and willingness to participate. Therefore, the research results obtained from a convenience sample cannot be generalized to the population. This is a major disadvantage of using a convenience sample in research studies.

Question 2

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

Accepted Answer

The statement is incorrect. In fact, the results of probability sampling are more generalizable than non-probability sampling because probability sampling provides every element in the population with a known and equal chance of being selected for the sample, ensuring a representative sample. Non-probability sampling, on the other hand, does not guarantee a representative sample, which limits generalizability.

Question 3

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

Accepted Answer

The payroll of an organization would provide a list of all the members of the organization who are being paid, making it the sampling frame for any study involving the individuals in the organization.

Question 4

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

Accepted Answer

The minimal sample size for subsamples depends on the statistical method being used and the desired power of the analysis, not a fixed number like 10.

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 .

Accepted Answer

Simple random sampling ensures that every member of the population has an equal chance of being selected for the sample. This method is more likely to result in a representative sample, as every individual in the population has an equal chance of being included in the sample. This means that the sample is more likely to reflect the characteristics of the population as a whole.

Question 6

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

Accepted Answer

Snowball sampling and judgement sampling are both non-probability sampling designs, meaning they do not rely on random selection to choose participants for the sample. In snowball sampling, participants are recruited based on referrals from other participants, while in judgement sampling, participants are chosen based on the judgement of the researcher or another expert in the field.

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.

Accepted Answer

A sampling unit is an individual element or group of elements subject to selection during the sampling process.

Question 8

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

Accepted Answer

The answer of In probability sampling all elements of a...

Question 9

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

Accepted Answer

The answer of Snowball sampling and quota sampling are both...

Question 10

The bigger the sample size,the better.

Accepted Answer

The answer of 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.

Accepted Answer

When a sample is representative, it accurately reflects the properties of the population, without over or under-representing any particular groups or characteristics.

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.

Accepted Answer

The researcher is only collecting data from consumers who are leaving a specific supermarket at certain times, which is a convenient and easily accessible sample. This method may not represent the views of all consumers who shop at the supermarket and is therefore not a great example of a random, representative sampling method.

Question 13

Convenience sampling and quota sampling are examples of probability sampling.

Accepted Answer

Convenience sampling and quota sampling are examples of nonprobability sampling, as they do not involve random selection of participants from the entire population.

Question 14

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

Accepted Answer

The answer of Cluster sampling is the least reliable and...

Question 15

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

Accepted Answer

The definition of a sampling frame is that it represents all the elements in the population from which the sample is drawn, either physically or conceptually. Therefore, the answer is true.

Question 16

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

Accepted Answer

Probability sampling designs ensure that every member of the population has an equal chance of being selected for the sample, increasing the likelihood that the sample is representative of the population as a whole. This is important when generalizing the findings from the sample to the larger population.

Question 17

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

Accepted Answer

Probability sampling ensures that each member of the population has an equal chance of being selected, which leads to a more representative sample and greater accuracy in generalizing to the population. Non-probability sampling methods do not ensure equal chances of selection and may lead to bias or inaccuracy in the results.

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

Accepted Answer

Simple random sampling is typically the best choice when the goal is to generalize the results to the population. This method ensures that each member of the population has an equal chance of being selected for the sample, which helps to minimize bias and increase the representativeness of the sample. Stratified sampling, judgement sampling, and quota sampling all involve some degree of subjectivity in the selection process, which can decrease the representativeness of the sample and reduce the generalizability of the results.

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.

Accepted Answer

Systematic sampling involves selecting subjects at regular intervals from a list, not dividing the population into segments.

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.

Accepted Answer

Quota sampling is a form of non-probability sampling where researchers select participants based on certain predetermined characteristics in order to ensure a diverse sample. The other options (systematic sampling, area sampling, and cluster sampling) are forms of probability sampling where each member of the population has an equal chance of being selected for the sample.

Quiz 10: Sampling

The most important disadvantage of a convenience sample is that: