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# FTCE Middle Grades Math: Sampling Chapter Exam

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#### Question 1 1. _____ is a sampling method where different groups within a population are used as a sample.

#### Question 2 2. Stratified random sampling works best when the researcher is familiar with the demographics of the population and:

#### Question 3 3. The law of large numbers shows a relationship between the theoretical probability and the _____.

#### Question 4 4. Which type of random sampling divides members of a population into homogeneous subgroups?

#### Question 5 5. What is a part of a population used to describe the whole group?

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#### Question 6 6. To find the interval you need, take your population divide by the _____.

#### Question 7 7. A statistician calculates the probability of an event in an experiment. After a dozen trials of the experiment, the statistician finds that the theoretical probability and the experimental probability differ. What is the likely reason for this?

#### Question 8 8. A _____ is a part of a population used to describe the whole group.

#### Question 9 9. When members belong to multiple groups in the population this is called _____. Cluster sampling _____ have this.

#### Question 10 10. According to the law of large numbers, the difference between the theoretical probability and the experimental probability becomes _____ as more experiments are performed, or as the sample size gets larger.

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#### Question 11 11. When doing systematic sampling, you must remember that all outcomes must be given _____ chance of being selected.

#### Question 12 12. You should use cluster sampling when the clusters are _____ in a population.

#### Question 13 13. Which theorem states that the larger the sample size, the closer the sample mean will be to the mean of the population?

#### Question 14 14. Which of the following conditions must be met for a sample to be a stratified random sample?

#### Question 15 15. The law of large numbers is also known as:

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Question 16
16.
Jackie is conducting a survey. Her population contains 100 people with strata divided into the following proportions:

20%, 10%, 10%, 30%, 30%

If Jackie wants to select 10 people for her sample, then how many people from each stratum would she pick?

#### Question 17 17. A researcher is studying a population, and decides to use simple random sampling. Why might they have made this decision?

#### Question 18 18. What is the name for all the members of a specified group?

#### Question 19 19. To use systematic random sampling, you must first create a list of your population, and then:

#### Question 20 20. A(n) _____ is all members of a specified group.

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#### Question 21 21. What is a type of random sampling where the variables have an equal, and unsystematic, chance of selection?

#### Question 22 22. Simple random sampling is usually done _____.

#### Question 23 23. Which of the following is a type of random sampling?

#### Question 24 24. When selecting strata groups, it is recommended you have:

#### Question 25 25. How do cluster sampling and stratified random sampling differ?

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#### Question 26 26. What is the method that requires selecting samples based on a system of intervals in a numbered population?

#### Question 27 27. Why is systematic random sampling unbiased?

#### Question 28 28. Which is a sampling method that involves separating the population into clusters, and then selecting random samples from each of the clusters?

#### Question 29 29. For which type of study is it most appropriate to use a random sample?

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

#### FTCE Middle Grades Math: Sampling 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!