This quiz works best with JavaScript enabled. Home > Ugc Net > Paper 1 > Research Stats > Measures Of Variability – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Measures Of Variability Quiz 1 (30 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. For which group of data does the mean equal the mode? A) 4, 4, 6, 6. B) 4, 5, 6, 6. C) 4, 5, 5, 8. D) 4, 5, 5, 6. Show Answer Correct Answer: D) 4, 5, 5, 6. 2. Find the mean of the given data 8, 7, 5, 9, 6, 13 A) 7.5. B) 8. C) 7.5. D) 10. Show Answer Correct Answer: B) 8. 3. How do you find the range of a set of numbers? A) Subtract the largest number from the smallest number. B) It is the number that occurs most often. C) Add all the numbers and divide by how many numbers there are. D) Subtract the smallest number from the largest number. Show Answer Correct Answer: D) Subtract the smallest number from the largest number. 4. What is the first thing you should do before finding the median or the mode? A) Start crossing numbers off. B) Put numbers in order from least to greatest. C) List the numbers how they are. D) Look for repeats. Show Answer Correct Answer: B) Put numbers in order from least to greatest. 5. What is the interquartile range of the data set:1, 8, 25, 30, 50, 72 A) 49. B) 42. C) 30. D) 50. Show Answer Correct Answer: B) 42. 6. Find the lower quartile (Q1) of the following set of scores 6, 7, 8, 9, 11, 13, 15 A) 13. B) 9. C) 6. D) 7. Show Answer Correct Answer: D) 7. 7. What does the variance represent? A) How many different variations are in the data set. B) How spread out each data value is from the mean. C) The range, but with a bunch of other stuff going on. D) How the population varies compared to the sample. Show Answer Correct Answer: B) How spread out each data value is from the mean. 8. It is a measure of variability that you get when you subtract the smallest number in a set of data from the largest number. A) Mode. B) Mean. C) Median. D) Range. Show Answer Correct Answer: D) Range. 9. The range in temperature for the month of November in El Paso, Texas is 44 degrees. If the record high temperature is 92 degrees, then what is the record low temperature. A) 96. B) 44. C) 136. D) 48. Show Answer Correct Answer: D) 48. 10. What does the term measure of variation mean? A) The data value that occurs the most often. B) The spread of data values. C) Numbers that split data into quarters (or fourths). D) None of above. Show Answer Correct Answer: B) The spread of data values. 11. Find the median for the following prices;$ 12.50, $ 15.50, $ 15, $ 17.50, $ 11.50 A) $ 15. B) $ 12.50. C) $ 17.50. D) $ 11.50. Show Answer Correct Answer: A) $ 15. 12. The mathematical difference between the highest (maximum) value and lowest (minimum) value in a data set. A) Mean Deviation. B) Range. C) Standard Deviation. D) Variance. Show Answer Correct Answer: B) Range. 13. Find the range of the data set:24, 49, 47, 78, 66, 37, 49, 82 A) 58. B) 54. C) 59. D) 33. Show Answer Correct Answer: A) 58. 14. Find the Median of the following numbers:84, 88, 72, 74, 98, 16, 94 A) There is no median. B) 16. C) 98. D) 84. Show Answer Correct Answer: D) 84. 15. What is the Q1 for the following data? 52, 72, 96, 21, 58, 40, 75 A) 58. B) 75. C) 40. D) 35. Show Answer Correct Answer: C) 40. 16. The salaries of 5 public school teachers are given as follows:Php 30, 000, Php 24, 000, Php 22, 000, Php 23, 000, Php 28, 000.What is the range for the given set of ungrouped data above? A) Php 5, 000. B) Php 8, 000. C) Php 6, 000. D) Php 7, 000. Show Answer Correct Answer: D) Php 7, 000. 17. It measures the average deviation of the scores from arithmetic mean. A) Mean Deviation. B) Range. C) Standard Deviation. D) Variance. Show Answer Correct Answer: A) Mean Deviation. 18. What is the IQR of this data set?37, 42, 48, 51, 52, 53, 54, 54, 55 A) 8. B) 6. C) 9. D) 5. Show Answer Correct Answer: C) 9. 19. IQR stands for ..... A) Inside quick radiation. B) Interquartile range. C) Interquestion rainbow. D) I quit running. Show Answer Correct Answer: B) Interquartile range. 20. Which measure of variation is the difference between the maximum and minimum of the data? A) Mean. B) Range. C) Mode. D) Median. Show Answer Correct Answer: B) Range. 21. Before you can begin calculating the standard deviation, you must first: A) Find the median. B) Find the mode. C) Find the mean. D) Find the range. Show Answer Correct Answer: C) Find the mean. 22. How do you calculate the standard deviation? A) Divide the variance by 2. B) Its a long process and I can't explain it right now. C) Find the mean and multiply it by the variance. D) Take the square root of the variance. Show Answer Correct Answer: D) Take the square root of the variance. 23. What is the mean of the data set:6, 35, 8, 20, 6, 16, 7? A) 14. B) 12. C) 13. D) 15. Show Answer Correct Answer: A) 14. 24. Given a variance of 64, what is the standard deviation? A) 0. B) 6.8. C) 4096. D) 8. Show Answer Correct Answer: D) 8. 25. Here are the times (in minutes) that six students needed to finish a quiz:10, 14, 15, 15, 14, 10The Mean Absolute Deviation for this data is 2.A seventh student took 8 minutes to finish the quiz. We added his time to our data. What will happen to the MAD? A) It will not change. B) It will increase because our range is bigger. C) It will decrease because our range is bigger. D) It will decrease because we have more numbers in our data set. Show Answer Correct Answer: B) It will increase because our range is bigger. 26. The measure of ..... is a way of describing how far spread out the data is. A) Median. B) Variability. C) Mean. D) Center. Show Answer Correct Answer: B) Variability. 27. Calculate the Mean Absolute Deviation 7, 9, 2, 7, 3, 5, 10 A) 4.21. B) 2.41. C) 2. D) 3. Show Answer Correct Answer: B) 2.41. 28. The data set below represents the different costs of a camera at an electronic store.$ 32, $ 47, $ 121, $ 96, $ 49, $ 81, $ 56What is the median of the first half of the data? A) $ 59. B) $ 108. C) $ 47. D) $ 96. Show Answer Correct Answer: C) $ 47. 29. It is the square of the standard deviation and is also known as the mean square. A) Mean Deviation. B) Range. C) Standard Deviation. D) Variance. Show Answer Correct Answer: D) Variance. 30. The most common used indicator of the degree of dispersion and is also the most dependable measure to estimate the variability in a total population. A) Mean Deviation. B) Range. C) Standard Deviation. D) Variance. Show Answer Correct Answer: C) Standard Deviation. 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