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Questions and Answers
What is the main purpose of using a table of random numbers or a lottery system in simple random sampling?
What is the main purpose of using a table of random numbers or a lottery system in simple random sampling?
- To ensure that minority subgroups are represented in the sample
- To ensure that each unit in the sampling frame has an equal chance of being selected (correct)
- To make the sampling process more efficient
- To account for any trends or patterns in the population
When is systematic random sampling most appropriate to use?
When is systematic random sampling most appropriate to use?
- When the population is homogeneous and there is no suspicion of a trend or pattern in the frame or geographical layout (correct)
- When the sampling frame is not available
- When the sample size is small compared to the population size
- When the population is heterogeneous and there is a suspected trend or pattern in the frame or geographical layout
What is the formula for determining the sampling interval, $k$, in systematic random sampling?
What is the formula for determining the sampling interval, $k$, in systematic random sampling?
- $k = \frac{\text{population size}}{\text{sample size}}$ (correct)
- $k = \frac{\text{sample size}}{\text{population size}}$
- $k = \frac{\text{population size} \times \text{sample size}}{100}$
- $k = \frac{100}{\text{population size} \times \text{sample size}}$
What is the range of possible values for the random start, $rs$, in systematic random sampling?
What is the range of possible values for the random start, $rs$, in systematic random sampling?
Which of the following is a disadvantage of simple random sampling?
Which of the following is a disadvantage of simple random sampling?
What is the main purpose of arranging the target population in a specific order before applying systematic random sampling?
What is the main purpose of arranging the target population in a specific order before applying systematic random sampling?
What is the main goal of quota sampling?
What is the main goal of quota sampling?
What is the primary disadvantage of quota sampling?
What is the primary disadvantage of quota sampling?
Which type of non-probability sampling is useful when a population is hidden or difficult to access?
Which type of non-probability sampling is useful when a population is hidden or difficult to access?
What is the main disadvantage of snowball sampling?
What is the main disadvantage of snowball sampling?
Which type of data is gathered directly from the informants of the study?
Which type of data is gathered directly from the informants of the study?
Which data collection procedure involves interaction between the interviewer and the respondent?
Which data collection procedure involves interaction between the interviewer and the respondent?
What type of sampling involves two or more levels of units embedded one in the other?
What type of sampling involves two or more levels of units embedded one in the other?
Which of the following is a key characteristic of a questionnaire?
Which of the following is a key characteristic of a questionnaire?
Which type of sampling involves the selection of elements based on assumptions regarding the population of interest?
Which type of sampling involves the selection of elements based on assumptions regarding the population of interest?
What is the main purpose of experimentation in data collection?
What is the main purpose of experimentation in data collection?
How does observation differ from experimentation in data collection?
How does observation differ from experimentation in data collection?
In which type of sampling is the sample drawn from the part of the population that is readily available and convenient?
In which type of sampling is the sample drawn from the part of the population that is readily available and convenient?
What is the main advantage of convenience sampling?
What is the main advantage of convenience sampling?
Which of the following is considered unethical behavior in statistical practice?
Which of the following is considered unethical behavior in statistical practice?
Why is convenience sampling not suitable for generalizing findings?
Why is convenience sampling not suitable for generalizing findings?
What is the key difference between a questionnaire and an observational study?
What is the key difference between a questionnaire and an observational study?
Which of the following is a key characteristic of ethical statistical practice?
Which of the following is a key characteristic of ethical statistical practice?
What is the main reason for sampling according to the passage?
What is the main reason for sampling according to the passage?
Which of the following is NOT a factor that influences the representativeness of a sample?
Which of the following is NOT a factor that influences the representativeness of a sample?
Which type of sampling is described as minimizing or eliminating selection bias?
Which type of sampling is described as minimizing or eliminating selection bias?
When is sampling the entire population recommended according to the passage?
When is sampling the entire population recommended according to the passage?
In the provided example, why would interviewing people at a shopping center early in the morning using convenience sampling not represent the views of other members of society?
In the provided example, why would interviewing people at a shopping center early in the morning using convenience sampling not represent the views of other members of society?
What characteristic of the population is mentioned as important for simple random sampling to be applicable?
What characteristic of the population is mentioned as important for simple random sampling to be applicable?
What is the primary purpose of a sampling frame according to the passage?
What is the primary purpose of a sampling frame according to the passage?
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