Podcast
Questions and Answers
What is the primary difference between convenient samples and judgment samples?
What is the primary difference between convenient samples and judgment samples?
- Convenient samples require judgment, whereas judgment samples do not.
- Convenient samples are used for qualitative research, whereas judgment samples are used for quantitative research.
- Convenient samples are used for large populations, whereas judgment samples are used for small populations.
- Judgment samples require the researcher's judgment, whereas convenient samples do not. (correct)
What type of sampling is often used in focus group studies?
What type of sampling is often used in focus group studies?
- Convenient sampling
- Judgment sampling (correct)
- Referral sampling
- Probability sampling
What is the primary advantage of using referral sampling?
What is the primary advantage of using referral sampling?
- It is only used in qualitative research.
- It is a form of probability sampling.
- It is useful when there is a limited sample frame. (correct)
- It is always more accurate than other sampling methods.
What is the main characteristic of quota sampling?
What is the main characteristic of quota sampling?
What is the primary limitation of referral sampling?
What is the primary limitation of referral sampling?
Which type of sampling is used in industrial marketing research situations?
Which type of sampling is used in industrial marketing research situations?
What is the primary difference between judgment samples and quota samples?
What is the primary difference between judgment samples and quota samples?
What is the primary advantage of using judgment sampling?
What is the primary advantage of using judgment sampling?
Which type of sampling is used when there is a limited sample frame?
Which type of sampling is used when there is a limited sample frame?
What is the primary characteristic of quota sampling?
What is the primary characteristic of quota sampling?
Study Notes
Probability Sampling Methods
- Simple random sampling method: every member of the population has an equal and known probability of being selected.
- Probability of selection = Sample Size / Population Size
Simple Random Sampling
- Blind draw method: choosing participants randomly by their names or unique designations.
- Table of random numbers method: using a table of random numbers to select participants.
Simple Random Sampling Procedure
- Step 4: Access the population according to the specified definition.
- Step 5: Draw the sample, which is a two-phase process.
- Step 6: Validate the sample by comparing its demographic profile with a known profile.
- Step 7: Resample if necessary, by selecting more respondents and adding them to the sample.
Systematic Sampling
- A probability sampling method that uses a random starting point and a fixed skip interval.
- It is often used due to its economic efficiency and ease of application.
Non-Probability Sampling Methods
Judgment Samples
- A sampling method that requires the judgment of the researcher to select individuals who represent the population.
- Often used in focus group studies.
Referral Sampling
- A sampling method that requires respondents to provide names of additional respondents.
- Also known as "snowball samples".
Quota Samples
- A non-probability sampling method that establishes a specific quota for various types of individuals to be interviewed.
- Quotas are determined by the research objectives and are defined by key characteristics used to identify the population.
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Description
Learn about probability sampling methods, including simple random sampling, and how it differs from non-probability sampling. Understand the formula for probability of selection.
