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statistics questions with answers

49 multiple-choice questions. Open any question for its answer and explanation.

  1. Histogram is useful to graphically find the value of:
  2. Ogives for more then type and less than type intersect at
  3. Following table gives frequency distribution of marks of 70 students in a class test: Marks obtained No. of students 30 - 34.5 5 35-39.5 10 40-44.5 15 45 - 49.5 30 50 - 54.5 555 - 60.0 5Find what percentage of students secured 40 or more marks.
  4. The range and quartile deviation of the following observations29, 20, 30, 25, 39, 35, 48, 41, 60, 51, 70 are
  5. Which of the two series is more consistent?
  6. The first quartile is also known as
  7. The marks obtained by six students in a test are 12, 25, 18, 18, 20, The number of students whose marks are more than the average marks is
  8. In which pairs of years the total production of Type-T scooters was three lakhs ?
  9. For a certain year, the percentage of the total population by age-group is as follows: Age-Group in years Percentage15 years or less 30 16-25 17.75 26-25 17.25 36-45 14.50 46-55 14.25 56-65 5.12 66 and above 1.13 If 200 million people were below 36 years in age, approximately how many million will be in the age group 56 - 65 ?
  10. The following table gives performance of 500 students in four tests: Age group (I) (II) (III) (IV) Average Marks65 65 60 82 Range of Marks 25-85 15-100 55-750-100A stutend scores 74 marks in each test, Comparatively in which test he perfomed best?
  11. In which one among the following given years, the total production of all types of scooters was minimum ?
  12. Given the following data: Class Interval FrequencyIf the mean is 18, then the value of A is
  13. The percentage of students obtaining more than 10 and less than or equai to 40 marks is
  14. In which one among the given years the production of Type-Q scooters is closest to the average production of scooters by the company ?
  15. Find out arithmetic mean from the given table. Class Interval0-1010-2020-3030-4040-50Frequency4 13 18 96
  16. If the Mode of a moderately skewed frequency distribution is 16 and the mean is 16, then its Median is:
  17. The mean of 5 observations is 60, mean of 10 observations is 30, and mean of 15 observations is 20; then mean of all the 30 observations is:
  18. Which of the following statements is correct?
  19. For a distribution the mode is 28 and the median is Then the probable value of Arithmetic mean is :
  20. Consider the following distribution: Vales FrequencyThe type of above distribution in
  21. Sum of the absolute deviations is minimum when deviations are taken from
  22. During 1991-2001 the percentage increase in literate persons in Uttar Pradesh was
  23. What will be the variance of the following series ? X : -3 -2 3 8 9f : 5 4 22 4 5
  24. Which of the following is not related with presentation of data?