EDUC Y520: Strategies for Educational Inquiry



Selecting a Sample




On-Line Quiz

Note: This quiz may not function properly if you have the Microsoft Internet Explorer browser.

There are 25 multiple choice and true/false questions below. Answer each question by clicking on the appropriate button. When you have answered all of the questions, click the "Check Answers" button at the bottom of the page. Your score will be calculated, and you will see a list of the questions that you answered correctly, and those that you answered incorrectly. You may re-take the quiz as often as you wish. Scores are not saved. Click the "Reset" button to clear all your answers.

  1. You are given a random list of all graduating seniors at the university. You decide to survey every five names on the list and ask what types of activities they participated in while they were at the university. This is an example of _________ sampling.

      Random.
      Stratified.
      Cluster.
      Systematic.

  2. You wish to do a comparison study between two hopsital's success rates. Instead of assigning patients to go to one or the other, you divide your sample into two groups and randomly sample based upon which hospital individuals attend for treatment. Which type of sampling are you using?

      Random.
      Stratified.
      Cluster.
      Systematic.

  3. You wish to examine the effects of socio-economic status on diet. You can randomly sample all of the people that work or are patients at a local hospital for the study. You are concerned about the disproportionate number in your sample with higher socio-economic status, while not representing the lower socio-economic groups as proportionately. How would you sample to control for this problem?

      Random.
      Stratified.
      Cluster.
      Systematic.

  4. You go to the mall next weekend to study how people spend their money. You ask all by-passers to participate. Which type of bias does this procedure illustrate?

      Convenience.
      Purposive.
      Quota.
      Dmographic.
      No bias is present.

  5. Which of the following is an example of qualitative sampling technique?

      Cluster.
      Purposive.
      Stratified.
      Systematic.

  6. Which one of the following is one type of random sampling?

      Quota.
      Systematic.
      Convenience.
      Purposive.

  7. When it is not possible to list all members of a population, researchers often use which of the following type of sampling?

      Simple random.
      Systematic.
      Stratified.
      Quota.



    For items 8 - 16 consider the following description: Principal Meyer's school has 2,000 elementary children. She wants to obtain information from parents regarding school homework policies in order to make decisions about future school policy.

  8. Principal Meyer takes a numbered list of all students in the school and randomly selects a sample to participate. Which sampling technique does this illustrate?

      Systematic.
      Random.
      Cluster.
      Stratified.

  9. Principal Meyer wants to be sure she has a proportionate sample of parents based upon the grade level of their children. Which sampling method should she consider using?

      Systematic.
      Random.
      Cluster.
      Stratified.

  10. Principal Meyer decides she will send out surveys to the entire school and then will analyze the first 200 responses. In this case she is illustrating which of the following types of sampling?

      Convenience.
      Traditional.
      Quota.
      Purposive.

  11. Principal Meyer has decided to consider changes to her policy because the PTO president suggested some parents had concerns about the current policy. She leaves a stack of surveys at the main office desk and as parents come to pick up their children, volunteer, or as they enter the school on any other business she asks them to take the time to complete the survey. Which of the following does this strategy illustrate?

      Purposive.
      Intentional.
      Convenience.
      Quota.

  12. Which type of research is Principal Meyer conducing?

      Basic.
      Applied.
      Evaluation.
      Correlational.
      None of the above.

  13. Given the general guidelines presented in your text and her population, which of the following represents an approximate sample size she should collect?

      20-50.
      100-200.
      300-400.
      1500-2000.

  14. The target population in her study is

      Children in her school.
      Parents of children in her school.
      Elementary children in her district.
      Parents of elementary school children in the nation.

  15. Suppose Principal Meyer decides to approach her study differently. She identifies children as either those involved in extra-curricular activities or those not involved in extra-curricular activities. She samples about 20 parents of children from each group and collects data with a short interview. Which of the following best illustrates the sampling teachinque she is using?

      Homogeneous.
      Intensity.
      Snowball.
      Criterion.

  16. Principal Meyer decides to do phone interviews. She selects a few parents to start with and at the end of her brief interview she asks if the participant knows anyone else that might want to have input into her decision. She then lists those names and contacts them to participate. In this case, which type of sampling is she illustrating?

      Homogeneous.
      Intensity.
      Criterion.
      Snowball.

  17. Aki studies the experiences of Asian women enrolled in American universities. She selects a sample of eight single women from Asian countries who traveled to the United States for study. Which type of sampling does this illustrate?

      Homegeneous.
      Intensity.
      Snowball.
      Cluster.

  18. Aki's study is an example of

      Quantitative research.
      Qualitative research.
      Basic research.
      Evaluative research.

  19. Education researchers ultimately want the answer to a research question to pertain to the

      Sample.
      Accessible population.
      Target population.
      World.

  20. The best sample is one that is

      Selected at random.
      Convenient.
      Purposefully selected.
      Representative of the population.

  21. Population generalizability refers to

      Conclusions researchers make about a random sample. Conclusions researchers make about information uncovered in a research study.
      The degree to which a sample represents the population of interest.
      The degree to which results of a study can be extended to other settings or conditions.


    Questions 22-24 refer to the following research situation: A researcher who wanted to determine the benefits of using a new algebra study technique obtained permission from a school district to select 50 high school students. The researcher selected 50 students at random. The researcher selected 25 of these 50 students to participate in the new study program. The researcher gave a training session on traditional study techniques to the other 25 students and asked them to use these methods.

  22. The most likely target population in this study is

      Algebra students in the district.
      All students in the district.
      All algebra students.
      The 25 students who learned the new study technique.

  23. The method of sampling used in the study is.

      Simple random sampling.
      Stratified random sampling.
      Cluster sampling.
      Convenience sampling.

  24. The greatest threat to external validity in this study is:

      The division of the sample into two groups of 25.
      The use of only 50 students in the sample.
      The use of students from only one district.
      The use of only two different study techniques.

  25. When a study is replicated, it is repeated with a new sample and often under somewhat new conditions.

      True.
      False.

Questions:
Right
Wrong
Score




 

tified.