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Which one of the following statements is true? a. The entire group of individual

ID: 3332129 • Letter: W

Question

Which one of the following statements is true? a. The entire group of individuals or instances about whom we hope to learm is called the b. A population is a subset of the sample that we examine in hopes of learning something c. A statistic is a numerical value attributed to the population d. Bias occurs when there is a systematic failure of the sample to represent the population. 6. population. about the population. a random sample of the 300 passengers on a flight from Chicago to San Diego. Use this information to answer the following four questions. 7. If, from a boarding list, we randomly choose 5 people flying first class and 25 of the other passengers to survey, this would be an example of what type of sampling method? a. cluster sampling b. simple random sampling c. systematic sampling d. stratified random sampling 8. If we randomly select a seat position (right window, right center, right aisle, etc.) and survey all the passengers sitting in those seats, this would be an example of what type of sampling method? a. cluster sampling b. simple random sampling c. systematic sampling d. stratified random sampling 9. If we picked 30 people at random, this would be an example of what type of sampling method? a. cluster sampling b. simple random sampling c. systematic sampling d. stratified sampling 10. If we picked every 10h person as they boarded the plane, this would be an example of what type of sampling method? a. cluster sampling b. simple random sampling c. systematic sampling d. stratified sampling

Explanation / Answer

6. The true statement is:

a. The entire group of individuals or instances about whom we hope to learn is called population.

7. Since we divide the passengers into strata (first class, other) and then randomly sample them, this is an example of

d. Stratified random sampling

8. Since we divide the passengers into clusters and randomly select all passengers from a cluster, this is an example of

a. Cluster sampling

9. Since the 30 people are selected totally at random, this is an example of

b. Simple random sampling

10. Since the position and interval are fixed, this is an example of

c. Systematic sampling

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