This quiz works best with JavaScript enabled. Home > Ugc Net > Paper 1 > Research Stats > Measures Of Dispersion – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Measures Of Dispersion Quiz 2 (30 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The salary of the employees in the office were $ 15, 000; $ 18, 000; $ 16, 000; $ 14, 000; $ 90, 000; and $ 17, 000. What is the best measure of the central tendency of the salaries? A) Mean. B) Median. C) Mode. D) Range. Show Answer Correct Answer: B) Median. 2. What is the mean of this data set?6, 7, 2, 1, 5, 2, 1, 6 A) 24.75. B) 3.8. C) 3. D) 3.7. Show Answer Correct Answer: B) 3.8. 3. If 10 is added to every value in a set of data, what will happen to the value of the median? A) It will increase by 10. B) It will decrease by 10. C) It will stay the same. D) It will both increase and decrease. Show Answer Correct Answer: A) It will increase by 10. 4. A set of of data has a minimum value of 15 and a maximum value of 40. Find the new range if two numbers, 8 and 35, are added to the set of the data. A) 32. B) 35. C) 20. D) 25. Show Answer Correct Answer: A) 32. 5. A teacher needs to report the average of her last long quiz to her superior. Here are the scores, 58, 37, 25, 43, 38, 22, 31, 49, 53, 28. A) 35.30. B) 38.40. C) 35.00. D) 38.50. Show Answer Correct Answer: B) 38.40. 6. The Variance of a data is 2.5. Find the new variance if each data is multiplied by 3. A) 22.5. B) 7.5. C) 13.5. D) None of above. Show Answer Correct Answer: A) 22.5. 7. The median score is also the A) 1st quartile. B) 75th percentile. C) 5th decile. D) 3rd decile. Show Answer Correct Answer: C) 5th decile. 8. If a data set is bimodal, how many modes does it have? A) 2. B) 3. C) 1. D) 4. Show Answer Correct Answer: A) 2. 9. What measures of position divides the distribution into 4 equal parts? A) Deciles. B) Percentiles. C) Range. D) Quartiles. Show Answer Correct Answer: D) Quartiles. 10. Find the range of these numbers:15, 2, 3, 7, 8, 4, 3, 2, 16, 2, 4 A) 14. B) 7. C) 13. D) 2. Show Answer Correct Answer: A) 14. 11. How to find interquartile range for group data? A) Bar chart. B) Histogram. C) Polygon. D) Ogive. Show Answer Correct Answer: D) Ogive. 12. The positive square root is taken of the population variance then collected measure is transformed into ..... A) Standard root. B) Standard deviation. C) Standard variance. D) Sample variance. Show Answer Correct Answer: B) Standard deviation. 13. A number that is either MUCH larger or MUCH smaller than the rest of the numbers is a(n) A) Lier. B) Inlier. C) I'm lying. D) Outlier. Show Answer Correct Answer: D) Outlier. 14. Coefficient of standard deviation is the ratio of ..... A) Mean to Standard Deviation. B) Standard Deviation to Mean. C) Median to Standard Deviation. D) Standard Deviation to Median. Show Answer Correct Answer: B) Standard Deviation to Mean. 15. It is most appropriate to calculate the mean when using which level of measurement? A) Nominal data. B) Ordinal data. C) Interval data. D) None of above. Show Answer Correct Answer: C) Interval data. 16. What does this symbol represent? $ \sigma$ A) Mean Deviation. B) Standard Deviation. C) Variance. D) Sigma. Show Answer Correct Answer: B) Standard Deviation. 17. The mode score on the 6th grade math test was 94! Which of these interpretations MUST be correct? A) A score of 91 was slightly below average. B) No student scored below a 94. C) More students received a 94 than any other score. D) 94 was the highest score on the test. Show Answer Correct Answer: C) More students received a 94 than any other score. 18. Given the range is 5, if each data is multiplied with 3, what is the value of new range? A) 15. B) 10. C) 5. D) 8. Show Answer Correct Answer: A) 15. 19. The variance of a set of data is 18. Find the new variance if each value in the set of the data is substracted by 5 and the divided by 3. A) 11. B) 2. C) 8. D) 6. Show Answer Correct Answer: B) 2. 20. The variance of a set of the data is 35. If each value in the set of the data is multiplied by 2, find the new variance. A) 70. B) 140. C) 35. D) 105. Show Answer Correct Answer: B) 140. 21. What measure of center is best to use when we have outliers? A) Mode. B) Range. C) Mean. D) Median. Show Answer Correct Answer: D) Median. 22. What is the standard deviation for the data given:{12, 13, 29, 18, 61, 35, 21} A) 41.98. B) 293.67. C) 15.87. D) 17.14. Show Answer Correct Answer: D) 17.14. 23. Which of the following best describes the process of finding the range for a set of data? A) ADD the biggest and smallest numbers. B) Place the number in order from least to greatest then find the middle. C) Find the difference between the Maximum and the Minimum. D) Find the average. Show Answer Correct Answer: C) Find the difference between the Maximum and the Minimum. 24. What is the first step when calculating the popular standard deviation? A) Find the mean. B) Take the square root. C) Divide the number of data points. D) Add all of the differences squared together. Show Answer Correct Answer: A) Find the mean. 25. Find the interquartile range of the data:20, 22, 25, 29, 31 A) 30. B) 9. C) 25. D) 21. Show Answer Correct Answer: B) 9. 26. Find the Mean Absolute Deviation:10, 9, 3, 8, 10. The Mean is 8 A) 5. B) 2. C) 1. D) 3. Show Answer Correct Answer: B) 2. 27. Find the interquartile range for this set of data 1 3 4 6 7 9 11 A) 9. B) 4. C) 3. D) 6. Show Answer Correct Answer: D) 6. 28. Joanne's Z-score is-1.5. What does this mean? A) She didn't take the test yet. B) She scored 1.5 standard deviations below the average. C) She did better than most people. D) No clue. Show Answer Correct Answer: B) She scored 1.5 standard deviations below the average. 29. Order the data and find the median or Q22, 3, 3, 3, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6, 6, 7, 7, 8, 8, 8, 9, 9 A) 6. B) 4. C) 3. D) 5. Show Answer Correct Answer: A) 6. 30. Which measure of central tendency would not be appropriate to calculate if there is no value that is the most common? A) Mean. B) Median. C) Mode. D) None of above. Show Answer Correct Answer: C) Mode. ← PreviousNext →Related QuizzesPaper 1 QuizzesUgc Net QuizzesMeasures Of Dispersion Quiz 1Measures Of Dispersion Quiz 3Analysis Of Variance QuizChi Square QuizCoefficient Of Variation Discrete Serious And Continuous Serious QuizConcept Of Point And Interval Estimation QuizConcept Of Sampling And Other Concepts Related To Sampling QuizConfidence Intervals Quiz 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books