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SBA Math - Grade 7: Samples & Populations Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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Question 1 1. Which of the following type of error will always happen no matter how you design your study?

Question 2 2.

Find the population variance of the following data set:

11, 12, 55, 4, 17, 13, 19

Question 3 3. As Tara conducts her research, she becomes concerned that her sample might not really represent the population under study in the research. Why is this a MAJOR concern?

Question 4 4. When someone refers to the population of a study, they are referring to:

Question 5 5. Damon wants to test two different medications. When deciding which medication to give to each subject, he flips a coin. Which of the following is Damon demonstrating?

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Question 6 6. All the members of a specified group are known as:

Question 7 7. What do we call a part of a population used to describe the whole group?

Question 8 8. What are a sequence of equally distributed variables?

Question 9 9. Jared would like to study the similarities and differences between the practice regimes of athletes at different socioeconomic levels. How would you expect Jared to ideally approach his sample selection?

Question 10 10. Matthew is worried that the results of his study may not be valid because the majority of his sample did not return their surveys. Which type of error is Matthew worried about?

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Question 11 11. How far a set of numbers are spread out is known as:

Question 12 12. Carrie is studying which teaching method is best. She chooses classrooms to use in her study by drawing names out of a hat. But when she assigns method to each of the classes, she makes the decision in a non-random way. Which of the following best describes Carrie's actions?

Question 13 13. Mattie is worried that the difference between the results of her study and what is actually true for the population may be too large. Which of the following would best define what is Mattie worried about?

Question 14 14. Purposive sampling works best when _________________.

Question 15 15. Which of the following could be a sample for a study of the spending habits of high school students in Canada?

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Question 16 16. Due to its ease of data collection, most experiments are conducted using this kind of sample:

Question 17 17. A convenience sample is BEST described as:

Question 18 18. What are the characteristics of a sample used to infer information about the population?

Question 19 19. Thomas is studying the experience of individuals suffering from multiple sclerosis. Due to budget limitations, he is using a sample consisting of individuals who are being treated at a hospital near his home. Why might a researcher like Thomas wish to have a different kind of sample?

Question 20 20. Which of the following accurately describes the sampling frame in a research study?

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Question 21 21. Which of the following best explains why it is important to use random selection?

Question 22 22. If you are a college student and you want to perform a study on the effects of caffeine on studying, who would be your convenience sample?

Question 23 23. For which type of study is it most appropriate to use a random sample?

Question 24 24. A good sample, convenience or otherwise, attempts to be ________ of the population.

Question 25 25. A _____ is a part of a population used to describe the whole group.

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Question 26 26. A limitation of a convenience sample is that:

Question 27 27. The sample of a study consists of:

Question 28 28. A part of a population used to describe the whole group is known as:

Question 29 29. Anna uses a random number generator to decide which treatment to administer to each of her subjects. Which of the following is Anna demonstrating?

Question 30 30. Susan wants to study the effect of being the daughter of the President of the United States on social life. Which of the following methods of sampling will Susan most likely use?

SBA Math - Grade 7: Samples & Populations Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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