Sampling Flashcards
What is sampling?
Sampling is the process of selecting a representative group from the population under study.
What is the target population?
The target population is the total group of individuals from which the sample might be drawn.
What is a sample?
A sample is the group of people who take part in the investigation.
What is opportunity sampling?
Opportunity sampling involves selecting individuals who are available and willing to participate, e.g., students.
What is random sampling?
Random sampling ensures that every member of the population has an equal chance of being selected.
What is stratified sampling?
Stratified sampling ensures that key characteristics of the population are represented in the same proportion in the sample.
What is systematic sampling?
Systematic sampling involves selecting every nth individual from a list of the population.
What is volunteer sampling?
Volunteer sampling involves individuals volunteering to participate in the study, often in response to an advertisement.
What is a strength of random sampling?
The selection is unbiased.
What is a limitation of opportunity sampling?
It may make the sample less representative.
In stratified sampling, how is gender represented in a sample of 100 from a population of 10,000 with 4,000 males?
40 males should be included in the sample to represent the gender proportion.
What is a disadvantage of volunteer sampling?
Certain types of people may be more attracted to volunteer.
True or False: Stratified sampling is biased.
False.
Fill in the blank: The sample should be representative of the _______.
[target population]
What is one method to eliminate sampling bias?
Using a list of all members of the target population.
What is a common challenge with systematic sampling?
It can be extremely time-consuming and difficult to implement.
What is a characteristic of volunteer sampling?
It is the easiest method to conduct.
What is a potential issue with random sampling?
It may not be truly unbiased unless a number is selected randomly.
