Olympiad – Class IX – Mathematics - Statistics

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Question - 1

Which of the following is the number of times a particular item occurs in a class interval?

  • A Mean
  • B Frequency
  • C Cumulative frequency
  • D Median

Question - 2

What are the groups into which large data is condensed called?

  • A Class limits
  • B Classes
  • C Class size
  • D Class width

Question - 3

Find the mean of first 5 whole numbers.

  • A 2.5
  • B 3
  • C 1.5
  • D 2

Question - 4

The relative humidity (in %) of a city for 10 days is given in the

Determine its range

  • A 9.3
  • B 9.6
  • C 9.5
  • D 9.8

Question - 5

The demand for different shirt sizes, as obtained from a survey, is given in the table.

Find the modal shirt size.

  • A 39
  • B 40
  • C 44
  • D 42

Question - 6

The class marks of a frequency distribution are given as 15.20,25............., Find the class corresponding to the classmark 20.

  • A 12.5 - 17.5
  • B 17.5 - 22.5
  • C 18.5 - 21.5
  • D 19.5 - 20.5

Question - 7

The bar graph given shows the months of birthdays of 40 students of a class.

How many students were born in August?

  • A 6
  • B 4
  • C 5
  • D 3

Question - 8

The bar graph given shows the months of birthdays of 40 students of a class.

In which month were the minimum number of students born?

  • A February
  • B June
  • C December
  • D May

Question - 9

The bar graph given shows the months of birthdays of 40 students of a class.

In which months were at least 5 students born?

  • A June and October
  • B March and November
  • C February and Septernber
  • D May and August

Question - 10

The bar graph given shows the months of birthdays of 40 students of a class.

In which months was the difference in the number of students born the same as that in October and November?

  • A February and January
  • B May and July
  • C March and April
  • D August and September