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Inferential Statistics Quiz 1 (25 MCQs)

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1. What is the mean of the following data set? 1, 2, 3, 4, 5, 6, 7, 7, 8, 8, 8, 9, 9,
2. What is another name for a type I error?
3. Understanding-1. What is meant by inferential statistics?
4. What is the relationship between significance level and confidence level?
5. Which of the following types does not belong in the group?
6. Which statistical procedure should be used in order to answer this research problem: "Is there a significant relationship between height and weight of the patients? "
7. What statistical tool is appropriate when the predictor is categorical and the outcome is also categorical?
8. What happens to the confidence interval when we introduce some outliers to the data?
9. Which of the following is a continuous variable?
10. Understanding-2. What is the purpose of inferential statistics?
11. Which test does not use ordinal data?
12. *A study done by the American Academy of Neurology suggests that older people who had a high caloric diet more than doubled their risk of memory loss.
13. What statistical tool is appropriate when the predictor is quantitative and the outcome is also quantitative?
14. Remembering-2. What is the relationship between unbiasedness and consistency in statistics?
15. Which statistical procedure should be used in order to answer this research problem: "Is there a significant difference in the research competencies between public high school graduates and private high school graduates? "
16. When participants who arrive for a research study are put into treatment groups on the basis of chance,
17. Data which can be measured on a fixed scale and does have an absolute zero
18. Remembering-2. What is the definition of sample in statistics?
19. Which two are examples of descriptive statistics?
20. Which symbol represents the mean of a sample?
21. *Scientists at the University of Oxford in England found that a good laugh significantly raises a person's pain level tolerance.
22. If you are given the population standard deviation, what should be the minimum size of the sample?
23. Barb has a directional hypothesis. How can she test for statistical significance?
24. Understanding-2. Can an unbiased estimator still have a high variance?
25. Josh did not describe whether his hypotheses will be positive or negative. This means his hypotheses is _____
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