
What is the difference between class width and range
Important Questions on Statistics
Write mid-value of the following frequency distribution.
Class interval | |||||||
Frequency |

Find the value of in following table.
Term | Frequency | Cumulative Frequency |





The table below shows, children of a class sorted according to their marks in an examination.
Marks | Number of children |
If we arrange the children from the one with the least mark to the one with the greatest, then what will be the assumed mark of the student?



Class | |||||
Frequency |
The cumulative frequency of the class of the above frequency distribution is _____.


The given table represents the exports (in ₹ crores) of four items A, B, C and D over a period of six years. Study the table and answer the question that follows.
Items Year |
A | B | C | D |
In which year, the exports of item were the average exports of item during six years;

No. of Accidents | ||||||||
Frequency |
In how many cases or more accidents occur ?

Write less than cumulative frequency and greater than cumulative frequency table for the following data.
Class interval | |||||
Frequency |




A survey regarding the heights (in cm) of girls of Class X of a school was conducted and the following data as obtained"
Height in cm | Number of girls |
Less than | |
Less than | |
Less than | |
Less than | |
Less than | |
Less than |
Find the median height.

The given table represents the exports ( incrores) of four items and over a period of six years. Study the table and answer the question that follows:
Items | ||||
Years | ||||
The total exports of item from to is what percentage less than the total exports of all the four items in :(Correct to one decimal place)

The following table gives the frequency of vowels used in the page of a book.
Vowels | a | e | i | o | u |
Frequency |

