This quiz works best with JavaScript enabled. Home > Cbse > Class 9 > Mathematics > Statistics > Class 9 Maths Chapter 14 Statistics – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 9 Maths Chapter 14 Statistics Quiz 1 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is a the meaning for "median" ? A) Fair share. B) Repeats the most. C) Variation. D) Middle. Show Answer Correct Answer: D) Middle. 2. Say 'TRUE' or 'FALSE'In a histogram the area of each rectangle is proportional to the class size of the corresponding class interval A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: B) FALSE. 3. The class mark of the class 16-24 is ..... A) 16. B) 24. C) 20. D) None of the above. Show Answer Correct Answer: C) 20. 4. If class marks of a distribution are 17, 25, 33, 41, 49, 57 then the width of each class interval is ..... A) 20. B) 10. C) 18. D) 8. Show Answer Correct Answer: D) 8. 5. The collection of information, collected for a purpose is called: A) MEDIAN. B) DATA. C) MODE. D) MEAN. Show Answer Correct Answer: B) DATA. 6. Difference between maximum and minimum observation is called A) Mode. B) Range. C) Mean. D) Median. Show Answer Correct Answer: B) Range. 7. The scores of a student in five tests:10; 8; 13; x and 9.Knowing that the average (mean) of these five scores is 12, then x = A) 18. B) 12. C) 14. D) 20. Show Answer Correct Answer: D) 20. 8. In the class intervals 40-50, 50-60, the number 50 is included in which of the following? A) 30-40. B) 50-60. C) 40-50. D) 60-70. Show Answer Correct Answer: B) 50-60. 9. The mean of x-1, x + 1, x + 3 and x + 5 is ..... A) X + 1. B) X + 4. C) X + 2. D) X + 3. Show Answer Correct Answer: C) X + 2. 10. Mode of 1, 6, 4, 5, 4, 6, 7, 8, 6 is A) 5. B) 6. C) 4, 6. D) 4. Show Answer Correct Answer: C) 4, 6. 11. Find the range of the following data:25, 18, 20, 22, 16, 6, 17, 15, 12, 30, 32, 10, 19, 8, 11, 20. A) 26. B) 15. C) 28. D) 10. Show Answer Correct Answer: A) 26. 12. If marks of students of a class are arranged in ascending order, then it is called an ..... A) Array. B) Representation of data. C) Variant. D) Raw data. Show Answer Correct Answer: A) Array. 13. To find the average or mean of a set of numbers, add up all the items and divide by ..... A) The minimum. B) 2. C) The maximum. D) The number of items. Show Answer Correct Answer: D) The number of items. 14. The mode of a frequency distribution is obtained graphically from A) A frequency curve. B) An ogive. C) A frequency polygon. D) A histogram. Show Answer Correct Answer: D) A histogram. 15. Median is after arranging the observation in ascending order A) Last term. B) Middle term. C) First term. D) None. Show Answer Correct Answer: B) Middle term. 16. The ratio of the sum of observations and the total number of observation is called A) Median. B) Mode. C) Central tendency. D) Mean. Show Answer Correct Answer: D) Mean. 17. Class mark of a particular class is 7.5 and class size is 10 find the class interval A) 3-13.5. B) 2-13. C) 2.5-12.5. D) 2.5-13.5. Show Answer Correct Answer: C) 2.5-12.5. 18. The marks obtained by 17 students in a mathematics test out of 100 are given below:91, 82, 100, 100, 96, 65, 82, 76, 79, 90, 46, 64, 72, 68, 66, 48, 49. Find the range of the data A) 54. B) 46. C) 56. D) 45. Show Answer Correct Answer: A) 54. 19. In the class intervals 10-20, 20-30 the number 20 is included in A) 10-20. B) 20-30. C) Both the intervals. D) None. Show Answer Correct Answer: B) 20-30. 20. If each observation of the data is increased by 5, then their mean ..... A) Becomes 5 times the original mean. B) Is decreased by 5. C) Remains the same. D) Is increased by 5. Show Answer Correct Answer: D) Is increased by 5. 21. How do you find the median of a data set that has two middle numbers? A) You pick the higher middle number. B) You pick the lower middle number. C) Add the two middle numbers and divide it by 2. D) Subtract the two middle numbers and divide by 2. Show Answer Correct Answer: C) Add the two middle numbers and divide it by 2. 22. The sum of the percentages is always: A) 100%. B) $360^o$. C) 50%. D) None of choices. Show Answer Correct Answer: A) 100%. 23. If x be the mid-point and 1 be the upper class limit of a class in a continuous frequency distribution. What is the lower limit of the class? A) X-1. B) ZKS + 8. C) + A. D) X-1. Show Answer Correct Answer: A) X-1. 24. 11-20, 21-30, 31-40, the classes are called A) Exclusive. B) Boundaries. C) Inclusive. D) Continuous. Show Answer Correct Answer: C) Inclusive. 25. What is frequency? A) A) The number of times an observation occurs in the given data. B) B) When the investigator has collected the data and he has not arranged the same in a systematic manner. C) C) When the individual units are arranged in ascending order or descending order. D) None of the above. Show Answer Correct Answer: A) A) The number of times an observation occurs in the given data. 26. Roger has the following data:12, 10, 3, 5, 6Susan has the following data:5, 9, 4, 5, 6Who has the data with the highest median and what is it? A) Susan-5.5. B) Susan-7. C) Roger-8. D) Roger-6. Show Answer Correct Answer: D) Roger-6. 27. Facts which are numerical or otherwise collected with a definite purpose are called A) Information. B) Statistics. C) Data. D) None. Show Answer Correct Answer: C) Data. 28. Statistics is for A) Data. B) Information. C) Presentation. D) Collection of data and presentation of data. Show Answer Correct Answer: D) Collection of data and presentation of data. 29. Find the average (mean) of these numbers:5, 11, 2, 12, 4, 2 A) 6. B) 4.1. C) 4.5. D) 4. Show Answer Correct Answer: A) 6. 30. What is the mean?4, 5, 6, 7, 3, 4, 10, 1 A) 7. B) 8. C) 5. D) 4.5. Show Answer Correct Answer: C) 5. 31. The consecutive class marks of a data having continuous class intervals having class width as 5, have a gap of ..... between them. A) 2.5. B) 4.5. C) 10. D) 5. Show Answer Correct Answer: D) 5. 32. The range of data 27, 18, 19, 21, 25, 35, 38 is ..... A) 11. B) 20. C) 56. D) 38. Show Answer Correct Answer: B) 20. 33. Find the class width for the grouped frequency distribution of the class intervals 1-20, 21-40, 41-60, ..... A) 15. B) 10. C) 20. D) 17. Show Answer Correct Answer: C) 20. 34. The information collected from a source which had already been recorded say from registers is called A) Primary information. B) Primary data. C) Secondary data. D) None. Show Answer Correct Answer: C) Secondary data. 35. The grades of 5 students are:4, 6, 6, 8 and 10. The mean grade is: A) 5. B) 6.8. C) 10. D) 7.2. Show Answer Correct Answer: B) 6.8. 36. -information being collected A) Data. B) Variability. C) Tally. D) Graph. Show Answer Correct Answer: A) Data. 37. Mean of 3, 5, 4, 1, 7 is A) 4. B) 7. C) 5. D) 6. Show Answer Correct Answer: A) 4. 38. Which of the following variables are discrete? 1. Size of shoes, 2. Number of pages in a book, 3. Distance travelled by a train, 4. Time A) 1 and 2. B) 1 and 4. C) 1 and 3. D) 2 and 4. Show Answer Correct Answer: A) 1 and 2. 39. A data is such that its minimum value is 86 and range is 32 then maximum value of data is. A) 120. B) 119. C) 118. D) 117. Show Answer Correct Answer: C) 118. 40. Class mark of the first class interval is 5 and there are five classes.If the class size is 10, then the last class interval is A) 20-30. B) 50-60. C) 40-50. D) 30-40. Show Answer Correct Answer: C) 40-50. 41. To analyse the election results, the data is collected from a newspapers. The data thus collected is known as A) Raw data. B) Secondary data. C) Grouped data. D) Primary data. Show Answer Correct Answer: B) Secondary data. 42. A survey should always be ..... and ..... A) Random and biased. B) Random and unbiased. C) All the above. D) None of the above. Show Answer Correct Answer: B) Random and unbiased. 43. The median of first n natural numbers is A) 5.5. B) 6.5. C) 4.5. D) 11. Show Answer Correct Answer: A) 5.5. 44. Data are said to be ..... if the investigator himself is responsible for the collection of data. A) Primary. B) Secondary. C) Range. D) Raw data. Show Answer Correct Answer: A) Primary. 45. The statistical data can be represented by: A) Frequency bar graph. B) Pie graph. C) Increasing cumulative frequency polygon. D) All choices. Show Answer Correct Answer: D) All choices. 46. The class marks of a frequency distribution are given as:15, 20, 25, ..... The class corresponding to the class mark 20 is ..... A) 19.5-20.5. B) 18.5-21.5. C) 17.5-22.5. D) 12.5-17.5. Show Answer Correct Answer: B) 18.5-21.5. 47. In the class interval 10-20, 20-30, the number 20 is included in ..... A) 10-20. B) 20-30. C) Both the intervals. D) None of these intervals. Show Answer Correct Answer: B) 20-30. 48. Histogram for continuous frequency distribution having unequal class interval can't be plotted A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: B) FALSE. 49. Mode of 3, 4, 7, 2, 4, 7, 6, 1, 6, 8, 6, 9, 6 is A) 8. B) 10. C) 6. D) 9. Show Answer Correct Answer: C) 6. 50. Class mark of 90-120 is 15 A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: B) FALSE. 51. Mean of 6, 8, 4, 12, x is 7 then value of x A) 4. B) 5. C) 6. D) 7. Show Answer Correct Answer: B) 5. 52. The monthly pocket money of six children is as follows ₹ 105, ₹ 130, ₹ 140, ₹ 50, ₹ 25, ₹ 45i) What is the highest pocket money? A) ₹ 150. B) ₹ 140. C) ₹ 205. D) ₹ 455. Show Answer Correct Answer: B) ₹ 140. 53. Class size for the following distribution:0-0.25, 0.25-0.50, 0.50-0.75 is A) 10. B) 50. C) 0.25. D) 2.5. Show Answer Correct Answer: C) 0.25. 54. What is the range of the following set of data?15, 25, 33, 33, 42, 47 A) 35. B) 34. C) 33. D) 32. Show Answer Correct Answer: D) 32. 55. The closed curve representing continuous grouped frequency distribution is called ..... A) Frequency Polygon. B) Histogram. C) Frequency curve. D) None of the above. Show Answer Correct Answer: A) Frequency Polygon. 56. The class mark of the class interval 3.7-8.3 is ..... A) 6. B) 3.3. C) 7. D) 8. Show Answer Correct Answer: A) 6. 57. What is the median of the following set of data?70, 80, 92, 98 A) 80. B) 92. C) 91. D) 86. Show Answer Correct Answer: D) 86. 58. The per capita income of India for the last 30 years noted by the investigator from The Times of India is an example of ..... data. A) Variant. B) Secondary. C) Primary. D) Raw Data. Show Answer Correct Answer: B) Secondary. 59. The information was collected by the investigator with a definite objective, the data obtained is called A) Secondary data. B) Primary data. C) Collection. D) None. Show Answer Correct Answer: B) Primary data. 60. -center number of a data set A) Range. B) Mean. C) Median. D) Mode. Show Answer Correct Answer: C) Median. Next →Related QuizzesMathematics QuizzesClass 9 QuizzesClass 9 Maths Chapter 14 Statistics Quiz 2 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books