GACE Middle Grades Math: 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 best explains why it is important to use random selection?

Question 2 2. What do we call a part of a population used to describe the whole group?

Question 3 3. Tara is planning to conduct a research study in order to study how U.S. males older than 65 years old feel about technology. For this study, Tara will interview small groups of men in several cities across the United States. The population for Tara's study is:

Question 4 4. Which of the following could be a sample for a study of the spending habits of high school students in Canada?

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

Question 8 8. Surya is doing a study. She sits at the entrance to the state fair and uses every fifth person that passes her in her study. Which of the following is Surya demonstrating?

Question 9 9.

Find the sample variance of the following data set:

2, 3, 4, 7, 10, 1, 2

Question 10 10. Which of the following explains the difference between probability and non-probability sampling?

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Question 11 11. Michael is trying to gather data for his study. He goes to a fast food restaurant during the lunch hour and asks people who walk into the restaurant if they would be willing to fill out a questionnaire. Which of the following methods of sampling is Michael using?

Question 12 12. All the members of a specified group are known as:

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. Which of the following is a type of random sampling?

Question 15 15. Due to its ease of data collection, most experiments are conducted using this kind of sample:

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Question 16 16. Purposive sampling works best when _________________.

Question 17 17. Which of the following type of error will always happen no matter how you design your study?

Question 18 18. What are the characteristics used to describe a population?

Question 19 19. A(n) _____ is all members of a specified group.

Question 20 20.

Find the population variance of the following data set:

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

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Question 21 21. Mario is worried that the results of his study may not be valid because he suspects that there is a problem with the sample that he chose. Which of the following types of error is Mario worried about?

Question 22 22. A part of a population used to describe the whole group is known as:

Question 23 23. 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 24 24. How far a set of numbers are spread out is known as:

Question 25 25. 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?

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Question 26 26. Julie wants to understand the growth rates of children in kindergarten. She asks a local elementary school for their help, and she takes the measurements of 45 kindergartners throughout the year. She finds that the children grow at a rate of 2-4 inches over the year, while the national research shows that children of that age grow at a rate of 2-3 inches per year. Identify the population, sample, statistic, and parameter in this scenario.

Question 27 27. 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?

Question 28 28. What are the characteristics of a sample used to infer information about the population?

Question 29 29. 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?

Question 30 30. What are a sequence of equally distributed variables?

GACE Middle Grades Math: 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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