This quiz works best with JavaScript enabled. Home > Ugc Net > Paper 1 > Research Stats > Measures Of Variability – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Measures Of Variability Quiz 2 (30 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The ..... is a measure of variability that represents the spread in data. A) Median. B) Product. C) Mean. D) Range. Show Answer Correct Answer: D) Range. 2. Describe how to find the mean of a data set. A) Multiply the numbers and divide by how many numbers there are. B) Add all the numbers together. C) Add all the numbers together and divide by how many numbers are in the data set. D) Subtract the Smallest number from the Largest Number. Show Answer Correct Answer: C) Add all the numbers together and divide by how many numbers are in the data set. 3. What is the difference between the formulas for population variance and sample variance? A) The population variance divides the sum of the squares by N, while sample divides by n-1. B) There is no difference. C) The population variance divides the sum of the squares by n-1, while sample divides by N. D) The sample variance is the square root of the population variance. Show Answer Correct Answer: A) The population variance divides the sum of the squares by N, while sample divides by n-1. 4. The IQR represents the middle ..... of the data. A) 100%. B) 75%. C) 25%. D) 50%. Show Answer Correct Answer: D) 50%. 5. Find the mean of these numbers:5, 5, 6, 6, 7, 8, 9, 9, 10, 10, 11 A) 7.82. B) 7.81. C) 8. D) 7. Show Answer Correct Answer: A) 7.82. 6. You are given a list of numbers with a median of 10. Each of the numbers is doubled. What will happen to the median of the second set of numbers? A) It will increase by one-half. B) Not enough information is given. C) It will stay the same. D) It will double. Show Answer Correct Answer: D) It will double. 7. It's the number you get when you add all the numbers together and then divide by the amount of numbers you have. A) Mode. B) Range. C) Median. D) Mean. Show Answer Correct Answer: D) Mean. 8. What measure of variability is used when only the two extreme values are considered? A) Range. B) Mean Deviation. C) Variance. D) Standard Deviation. Show Answer Correct Answer: A) Range. 9. The masses of six children are 34.5 kilograms, 42.6 kilograms, 39.8 kilograms, 40.1 kilograms, 53.4 kilograms, and 33.8 kilograms. Find the mean mass. A) 40. B) 41. C) 50. D) 40.7 kg. Show Answer Correct Answer: D) 40.7 kg. 10. When you compute for the measure of variability of a set of scores and it turn out to be zero, which of these could be said of the scores? A) All scores are identical. B) The mean of the scores is zero. C) The measure of variability cannot be computed. D) Half of the scores are additive inverse of the remaining half. Show Answer Correct Answer: A) All scores are identical. 11. Mrs. Rosenblatt's class has an average grade of 87. Later on she realizes she left out Joe's score. His grade was a 65. The new mean will, ..... A) Increase. B) Decrease. C) Stay the same. D) None of above. Show Answer Correct Answer: B) Decrease. 12. Given the data:136, 150, 119, 151, 125, 140.Find the upper quartile (Q3). A) 139.5. B) 143. C) 125. D) 150. Show Answer Correct Answer: D) 150. 13. Find the IQR (Q3-Q1) of the data20, 22, 25, 29, 31 A) 30. B) 25. C) 9. D) 21. Show Answer Correct Answer: C) 9. 14. Given this set of values:7, 7, 7, 7, 7, 7. What is the standard deviation? A) Standard Deviation = 0. B) Standard Deviation = 1. C) Standard Deviation = 7. D) Standard Deviation = 6. Show Answer Correct Answer: A) Standard Deviation = 0. 15. Find the mean of 3, 7, 9, 9 12. A) 6. B) 4. C) 8. D) 5. Show Answer Correct Answer: C) 8. 16. Find the range of the given data:16, 13, 3, 15, 14, 7, 10. A) 10. B) 12. C) 11. D) 13. Show Answer Correct Answer: D) 13. 17. Find the median:3, 5, 7, 4, 3, 1 A) 3 and 4. B) There isn't one. C) 3.5. D) 3. Show Answer Correct Answer: C) 3.5. 18. Which of the following is NOT a Measure of Variability? A) Range. B) Mean. C) Variance. D) Average Deviation. Show Answer Correct Answer: C) Variance. 19. Quartile 1 is the ..... A) Median. B) Mode. C) Upper Quartile. D) Lower Quartile. Show Answer Correct Answer: D) Lower Quartile. 20. What is the Q1 of this data set?6, 7, 2, 1, 5, 2, 1, 6 A) 1. B) 1.5. C) 2. D) 2.5. Show Answer Correct Answer: B) 1.5. 21. What is the mean of the data set:1, 8, 25, 30, 50, 72 A) 30. B) 26. C) 25. D) 31. Show Answer Correct Answer: D) 31. 22. Find the Standard Deviation{ 12, 15, 16, 12, } A) 3.6. B) 5.6. C) 4.09. D) 4. Show Answer Correct Answer: C) 4.09. 23. Which MAD values represent the least variability in a data set? A) MAD:0.99. B) MAD:0.75. C) MAD:2.25. D) MAD:3.5. Show Answer Correct Answer: B) MAD:0.75. 24. You sent the same email to 10 of your friends. The number of hours it took them to respond was:1, 1, 1, 2, 2, 3, 4, 5, 5, and 25. What are the mean, median and mode of this date? A) 4.9, 2.5, 1. B) 49, 2.5, 1. C) 4.8, 2.5, 1. D) 4.8, 2, 1. Show Answer Correct Answer: A) 4.9, 2.5, 1. 25. What is the definition of the mean? A) The average. B) The middle number. C) The difference between the highest and lowest numbers. D) The number that occurs the most. Show Answer Correct Answer: A) The average. 26. The data set below represents the different costs of a game at an electronic store.$ 32, $ 47, $ 121, $ 96, $ 49, $ 81, $ 56What is the MINIMUM price? A) $ 28. B) $ 32. C) $ 49. D) $ 23. Show Answer Correct Answer: B) $ 32. 27. It's the middle number in a set of data. A) Median. B) Mode. C) Range. D) Mean. Show Answer Correct Answer: A) Median. 28. Before you can begin calculating the variance, you must first: A) Find the mode. B) Find the mean. C) Find the median. D) Find the range. Show Answer Correct Answer: B) Find the mean. 29. Which IQR represents the largest variability in a data set? A) IQR:10. B) IQR:11. C) IQR:12. D) IQR:15. Show Answer Correct Answer: D) IQR:15. 30. All of the data sets below have the same mean.Set 1:SD=3.1Set 2:SD=4.9Set 3:SD=1.7Set 4:SD=3.2Which set of data probably has the points CLOSEST to the mean? A) Set 3. B) Set 2. C) Set 1. D) Set 4. Show Answer Correct Answer: A) Set 3. ← PreviousNext →Related QuizzesPaper 1 QuizzesUgc Net QuizzesMeasures Of Variability Quiz 1Measures Of Variability 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