This quiz works best with JavaScript enabled. Home > Ugc Net > Paper 1 > Research Stats > Inferential Statistics – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Inferential Statistics Quiz 1 (30 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the mean of the following data set? 1, 2, 3, 4, 5, 6, 7, 7, 8, 8, 8, 9, 9, A) 5.4. B) 5.9. C) 4.8. D) 6.2. Show Answer Correct Answer: B) 5.9. 2. What is another name for a type I error? A) False negative. B) False positive. C) True positive. D) True negative. Show Answer Correct Answer: B) False positive. 3. Understanding-1. What is meant by inferential statistics? A) The process of drawing conclusions from data. B) The process of summarizing data. C) The process of collecting data. D) The process of organizing data. Show Answer Correct Answer: A) The process of drawing conclusions from data. 4. Which word does not belong to the group? A) Deviation. B) Range. C) Mean. D) Variance. Show Answer Correct Answer: C) Mean. 5. What is the relationship between significance level and confidence level? A) Significance level = Confidence level. B) Significance level = 1-Confidence level. C) Significance level = sqrt (1-Confidence level). D) Significance level = 1/Confidence level. Show Answer Correct Answer: B) Significance level = 1-Confidence level. 6. Which of the following types does not belong in the group? A) Mean test. B) Correlation test. C) Comparison test. D) Regression test. Show Answer Correct Answer: A) Mean test. 7. 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? " A) Percentage. B) Frequency. C) Correlation. D) Multiple Regression Analysis. Show Answer Correct Answer: C) Correlation. 8. What statistical tool is appropriate when the predictor is categorical and the outcome is also categorical? A) Spearman's r. B) Chi-square Test. C) Sign Test. D) Kruskal-Wallis H Test. Show Answer Correct Answer: B) Chi-square Test. 9. What happens to the confidence interval when we introduce some outliers to the data? A) Confidence interval will increase with the introduction of outliers. B) We cannot determine the confidence interval in this case. C) Confidence interval is not affected by outliers. D) Don't know. E) Confidence interval will decrease with the introduction of outliers. Show Answer Correct Answer: A) Confidence interval will increase with the introduction of outliers. 10. Which of the following is a continuous variable? A) The number of hamburgers sold in a day at a branch of a fast-food chain. B) The temperature at which a hamburger is cooked at a branch of a fast-food chain. C) The number of employees of a branch of a fast-food chain. D) The eye color of children eating at a fast-food chain. Show Answer Correct Answer: B) The temperature at which a hamburger is cooked at a branch of a fast-food chain. 11. Understanding-2. What is the purpose of inferential statistics? A) To make predictions about a population based on a sample. B) To describe the distribution of a sample. C) To determine cause and effect relationships. D) To test hypotheses. Show Answer Correct Answer: A) To make predictions about a population based on a sample. 12. Which test does not use ordinal data? A) Mann Whitney U. B) Spearman's Rho. C) Chi Squared. D) Wilcoxon T test. Show Answer Correct Answer: C) Chi Squared. 13. *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. A) Descriptive Statistics. B) Inferential Statistics. C) I tak tau lah. D) None of above. Show Answer Correct Answer: B) Inferential Statistics. 14. What statistical tool is appropriate when the predictor is quantitative and the outcome is also quantitative? A) Spearman's r. B) Chi-square Test. C) Sign Test. D) Kruskal-Wallis H Test. Show Answer Correct Answer: A) Spearman's r. 15. Remembering-2. What is the relationship between unbiasedness and consistency in statistics? A) Unbiasedness and consistency are the same concept in statistics. B) Unbiasedness and consistency are completely unrelated concepts in statistics. C) Unbiasedness is the opposite of consistency. D) Unbiasedness is a necessary condition for consistency. Show Answer Correct Answer: D) Unbiasedness is a necessary condition for consistency. 16. 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? " A) Paired Samples T-test. B) Independent Samples T-test. C) ANOVA. D) Correlation. Show Answer Correct Answer: B) Independent Samples T-test. 17. When participants who arrive for a research study are put into treatment groups on the basis of chance, A) Random sampling has occurred. B) Random assignment has occurred. C) The statistical conclusions will also be absolutely correct. D) The research findings will be compromised because you should never randomly assign to groups. Show Answer Correct Answer: B) Random assignment has occurred. 18. Data which can be measured on a fixed scale and does have an absolute zero A) Ordinal. B) Interval. C) Ratio. D) Nominal. Show Answer Correct Answer: C) Ratio. 19. Remembering-2. What is the definition of sample in statistics? A) A variable that is being measured. B) A set of individuals or objects under study. C) A sample from a population. D) A measure of the center of a distribution. Show Answer Correct Answer: C) A sample from a population. 20. Which two are examples of descriptive statistics? A) Median and correlation. B) Mean and standard deviation. C) Hypothesis testing and histograms. D) Variance and regression analysis. Show Answer Correct Answer: B) Mean and standard deviation. 21. Which symbol represents the mean of a sample? A) $ \overline{x}$. B) $ s$. C) $ \mu$. D) $ \sigma$. Show Answer Correct Answer: A) $ \overline{x}$. 22. *Scientists at the University of Oxford in England found that a good laugh significantly raises a person's pain level tolerance. A) Descriptive Statistics. B) Inferential Statistics. C) I tak tau lah. D) None of above. Show Answer Correct Answer: B) Inferential Statistics. 23. If you are given the population standard deviation, what should be the minimum size of the sample? A) 30 or more. B) 30. C) It doesn't matter. D) Not enough information. Show Answer Correct Answer: C) It doesn't matter. 24. Barb has a directional hypothesis. How can she test for statistical significance? A) Two-tailed test. B) Barb needs a new plan. C) One-tailed test. D) None of above. Show Answer Correct Answer: C) One-tailed test. 25. Understanding-2. Can an unbiased estimator still have a high variance? A) No, an unbiased estimator always has a low variance. B) Yes, an unbiased estimator always has a low variance. C) No, an unbiased estimator cannot have a high variance. D) Yes, an unbiased estimator can still have a high variance. Show Answer Correct Answer: D) Yes, an unbiased estimator can still have a high variance. 26. Josh did not describe whether his hypotheses will be positive or negative. This means his hypotheses is ..... A) Wrong. B) A nondirectional hypotheses. C) Non research related. D) None of above. Show Answer Correct Answer: B) A nondirectional hypotheses. 27. Two basic divisions of statistics are: A) Inferential and descriptive. B) Population and sample. C) Sampling and scaling. D) Mean and median. Show Answer Correct Answer: A) Inferential and descriptive. 28. Which of the statement below defines Type I error? A) Rejecting the null hypothesis when it is false. B) Failing to reject the null hypothesis when it is false. C) Rejecting the null hypothesis when it is true. D) Accepting the null hypothesis when it is true. E) Don't know. Show Answer Correct Answer: C) Rejecting the null hypothesis when it is true. 29. Which statistical procedure should be used in order to answer this research problem: "Is there a significant difference between pre-test and posttest scores? " A) Paired Samples T-test. B) Correlation. C) Independent Samples T-test. D) ANOVA. Show Answer Correct Answer: A) Paired Samples T-test. 30. Repeated measures designs are when A) Participants only complete one condition of the experiment. B) All participants complete all conditions of the experiment. C) No participants complete all conditions of the experiment so it is repeated. D) Participants are matched on characteristics such as race and only take part in one condition. Show Answer Correct Answer: B) All participants complete all conditions of the experiment. 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