This quiz works best with JavaScript enabled. Home > Ugc Net > Paper 1 > Research Stats > Measures Of Dispersion – Quiz 3 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Measures Of Dispersion Quiz 3 (27 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the outlier in this data set?{23, 60, 30, 21, 25, 35, 29} A) 30. B) 60. C) 21. D) 35. Show Answer Correct Answer: B) 60. 2. , 10, 12, 12, 15, 17, 19, 20, 26, 21, 24, 30Solve for P50. A) 15. B) 17. C) 19. D) 20. Show Answer Correct Answer: A) 15. 3. Which of the measures of dispersion only uses two values in the distribution? A) Range. B) Standard deviation. C) Variance. D) Mean deviation. Show Answer Correct Answer: A) Range. 4. How many standard deviations is 95% within the mean? A) 3. B) 2. C) 1. D) 4. Show Answer Correct Answer: B) 2. 5. Suppose you have 3 data values of 12, 14, and 16. If a value of 30 is added to the data set, what effect does this have on the mean and standard deviation? A) The mean and standard deviation will not change. B) The mean will increase, but the standard deviation will not change. C) Both the mean and standard deviation will increase. D) The mean will stay the same, but the standard deviation will increase. Show Answer Correct Answer: C) Both the mean and standard deviation will increase. 6. Adam's Z-score on a test is +2.5. What does this mean? A) He'd better start studying. B) He did better than EVERYONE. C) He scored 2.5 standard deviations above the average. D) He did terrible. Show Answer Correct Answer: C) He scored 2.5 standard deviations above the average. 7. What is the second step when calculating the Mean Absolute Deviation? A) Find the distance each value is from the mean. B) Find the mean of the distances. C) Find the mean of the data. D) None of above. Show Answer Correct Answer: A) Find the distance each value is from the mean. 8. In a 100 item test, the passing mark is the 3rd quartile. What does it imply? A) The students should answer at most 50 items correctly to pass the test. B) The students should answer at most 75 items correctly to pass the test. C) The students should answer at least 75 items correctly to pass the test. D) The students should answer at least 50 items correctly to pass the test. Show Answer Correct Answer: C) The students should answer at least 75 items correctly to pass the test. 9. All examples are method to measure statistical dispersion except A) Variance. B) Interquartile Range. C) Standard Deviation. D) Mode. Show Answer Correct Answer: D) Mode. 10. Find the MAD for the following set:85, 90, 68, 75, 79 A) 79.4. B) 6.48. C) 32.4. D) 79. Show Answer Correct Answer: B) 6.48. 11. , 10, 12, 12, 15, 17, 19, 20, 26, 21, 24, 30Find the D7 score. A) 26. B) 20. C) 19. D) 17. Show Answer Correct Answer: B) 20. 12. The time spent in minutes b 20 students waiting in a line to buy their favourite meal were:3.4 2.1 3.8 2.2 4.5 1.4 0 0 1.6 4.8 1.5 1.9 0 3.6 5.2 2.7 3.0 0.8 3.8 5.2What is the upper quartile or Q3? A) 2. B) 3.8. C) 3. D) 2.45. Show Answer Correct Answer: B) 3.8. 13. The number of miles that Kiki cycled each week for a 7-week period is shown:36, 42, 28, 52, 48, 36, 31 What is the median number of miles Kiki cycled? A) 36. B) 24. C) 39. D) 52. Show Answer Correct Answer: A) 36. 14. The relative measure of dispersion is ..... A) Range. B) Standard Deviation. C) Coefficient of variation. D) Variance. Show Answer Correct Answer: C) Coefficient of variation. 15. Given the data:136, 150, 119, 150, 125, 140.Find the upper quartile (Q3). (Hint ..... put the numbers in order and find the median to help you find Q3) A) 150. B) 139.5. C) 143. D) 125. Show Answer Correct Answer: A) 150. 16. All of the below sets have the same mean.Set 1-Standard Deviation=3.1Set 2-Standard Deviation=4.9Set 3-Standard Deviation=1.7Set 4-Standard Deviation=3.2Which set of data has points closest to the mean on average (the least average spread)? A) 3. B) 4. C) 1. D) 2. Show Answer Correct Answer: A) 3. 17. Find the standard deviation for the following data; 86, 95, 78, 67, and 85. A) 10.43. B) 82.2. C) 9.33. D) 5. Show Answer Correct Answer: C) 9.33. 18. If the standard deviation of a data set is 4, what is the variance? A) 2. B) 16. C) 4. D) None of above. Show Answer Correct Answer: B) 16. 19. Find the mean of the following data.13, 35, 33, 47, 38, 37, 42, 16, 14 A) 31.55. B) 31.56. C) 30.56. D) 32.55. Show Answer Correct Answer: C) 30.56. 20. Find the MAD:58, 38, 54, 48, 26, 36 A) 43. B) 12. C) 10. D) 20. Show Answer Correct Answer: C) 10. 21. The lower quartile is equal to A) 50th percetile. B) 3rd quartile. C) 2nd decile. D) 25th percentile. Show Answer Correct Answer: D) 25th percentile. 22. How do you find the Interquartile Range? A) Divide the 3rd quartile by the 1st quartile. B) Subtract the biggest number by the smallest number. C) Divide the biggest number by the smallest number. D) Subtract the 3rd quartile by the 1st quartile. Show Answer Correct Answer: D) Subtract the 3rd quartile by the 1st quartile. 23. When a distribution is divided into ten equal parts, each score point describes the distribution as ..... A) Quantiles. B) Decile. C) Percentile. D) Quartile. Show Answer Correct Answer: B) Decile. 24. Find the lower quartile of the following set of scores12, 9, 4, 6, 5, 8, 9, 4, 10, 2 A) 10. B) 9. C) 4. D) 5. Show Answer Correct Answer: C) 4. 25. What is the name of the curve for the Empirical Rule? A) Upside down. B) Bell Shape. C) Skewed left. D) Skewed right. Show Answer Correct Answer: B) Bell Shape. 26. When finding the median what is the FIRST step? A) Find the Middle. B) Mark off the lowest number. C) Arrange the number from Least to Greatest. D) Mark off the highest number. Show Answer Correct Answer: C) Arrange the number from Least to Greatest. 27. Which of the following is a measure of variability? A) Mean. B) Median. C) Mode. D) Standard deviation. Show Answer Correct Answer: D) Standard deviation. ← PreviousRelated QuizzesPaper 1 QuizzesUgc Net QuizzesMeasures Of Dispersion Quiz 1Measures Of Dispersion Quiz 2Analysis 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