Research Mcqs

Chapter 16 Multiple Choice Questions (The answers are provided after the last question.) 1. Which of the following symbols represents a population parameter? a. SD b. σ c. r d. 0 2. If you drew all possible samples from some population, calculated the mean for each of the samples, and constructed a line graph (showing the shape of the distribution) based on all of those means, what would you have? a. A population distribution b. A sample distribution c. A sampling distribution d. A parameter distribution 3. What does it mean when you calculate a 95% confidence interval? a. The process you used will capture the true parameter 95% of the time in the long run b. You can be “95% confident” that your interval will include the population parameter c. You can be “5% confident” that your interval will not include the population parameter d. All of the above statements are true 4. What would happen (other things equal) to a confidence interval if you calculated a 99 percent confidence interval rather than a 95 percent confidence interval? a. It will be narrower b. It will not change c. The sample size will increase d. It will become wider 5. Which of the following statements sounds like a null hypothesis? a. The coin is not fair b. There is a correlation in the population c. There is no difference between male and female incomes in the population d. The defendant is guilty 6. The analysis of variance is a statistical test that is used to compare how many group means? a. Three or more b. Two or more 7. What is the standard deviation of a sampling distribution called? a. Sampling error b. Sample error c. Standard error d. Simple error

8. Hypothesis testing and estimation are the two key branches of the field of inferential statistics? a. True b. False 9. A ______ is a subset of a _________. a. Sample, population b. Population, sample c. Statistic, parameter d. Parameter, statistic 10. A _______ is a numerical characteristic of a sample and a ______ is a numerical...