Sampling Techniques and Data Collection at University of St. La Salle
30 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

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 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?

  • $k = \frac{\text{population size}}{\text{sample size}}$ (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?

    <p>$1 \leq rs \leq k$</p> Signup and view all the answers

    Which of the following is a disadvantage of simple random sampling?

    <p>Both (b) and (c)</p> Signup and view all the answers

    What is the main purpose of arranging the target population in a specific order before applying systematic random sampling?

    <p>To account for any trends or patterns in the population</p> Signup and view all the answers

    What is the main goal of quota sampling?

    <p>To reflect the proportions of the population in different categories</p> Signup and view all the answers

    What is the primary disadvantage of quota sampling?

    <p>The sample may not be representative of the population</p> Signup and view all the answers

    Which type of non-probability sampling is useful when a population is hidden or difficult to access?

    <p>Snowball sampling</p> Signup and view all the answers

    What is the main disadvantage of snowball sampling?

    <p>The sample may not be representative of the population</p> Signup and view all the answers

    Which type of data is gathered directly from the informants of the study?

    <p>Primary data</p> Signup and view all the answers

    Which data collection procedure involves interaction between the interviewer and the respondent?

    <p>Interview</p> Signup and view all the answers

    What type of sampling involves two or more levels of units embedded one in the other?

    <p>Multi-stage random sampling</p> Signup and view all the answers

    Which of the following is a key characteristic of a questionnaire?

    <p>There is interaction between the facilitator and respondent about the subject matter</p> Signup and view all the answers

    Which type of sampling involves the selection of elements based on assumptions regarding the population of interest?

    <p>Non-probability sampling</p> Signup and view all the answers

    What is the main purpose of experimentation in data collection?

    <p>To understand cause-and-effect relationships</p> Signup and view all the answers

    How does observation differ from experimentation in data collection?

    <p>Observation studies are not controlled, unlike experiments</p> Signup and view all the answers

    In which type of sampling is the sample drawn from the part of the population that is readily available and convenient?

    <p>Convenience sampling</p> Signup and view all the answers

    What is the main advantage of convenience sampling?

    <p>Good response rate</p> Signup and view all the answers

    Which of the following is considered unethical behavior in statistical practice?

    <p>Developing misleading graphs and using inappropriate summary statistics</p> Signup and view all the answers

    Why is convenience sampling not suitable for generalizing findings?

    <p>Cannot move beyond describing the sample</p> Signup and view all the answers

    What is the key difference between a questionnaire and an observational study?

    <p>Questionnaires are used for experimental studies, while observational studies are used for behavioral and attitudinal studies</p> Signup and view all the answers

    Which of the following is a key characteristic of ethical statistical practice?

    <p>Being fair, thorough, objective, and neutral in data collection and reporting</p> Signup and view all the answers

    What is the main reason for sampling according to the passage?

    <p>To determine truths about the population with known accuracy</p> Signup and view all the answers

    Which of the following is NOT a factor that influences the representativeness of a sample?

    <p>Demographic characteristics of the population</p> Signup and view all the answers

    Which type of sampling is described as minimizing or eliminating selection bias?

    <p>Probability sampling</p> Signup and view all the answers

    When is sampling the entire population recommended according to the passage?

    <p>When the population is very small</p> Signup and view all the answers

    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?

    <p>Limited to those present at the specific time and location</p> Signup and view all the answers

    What characteristic of the population is mentioned as important for simple random sampling to be applicable?

    <p>The population should be homogeneous and readily available</p> Signup and view all the answers

    What is the primary purpose of a sampling frame according to the passage?

    <p>To draw potential respondents from</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser