Frequency Distribution


 
 
Concept Explanation
 

Frequency Distribution

Frequency:

The number of times a particular observation occurs in a given data is called its frequency of an observation.The observation having maximum frequency is known as mode.

Illustration: In a data 7,6,5,5,4,3,2,2,5,1,3 find the frequency of 5.

Solution: Here the frequency of 5  in this data is 3.

Frequency Distribution: 

The tabular arrangement of data sharing their corresponding frequencies is called a frequency distribution. Frequency tells you how often something happened. The frequency of an observation tells you the number of times the observation occurs in the data.

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Sample Questions
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Question : 1

A random survey of numbers of children of various age group playing in a park was found as follows. Children playing under the age of 7 years are:

Age No. of Children
1 - 2 5
2 - 3 3
3 - 5 6
5 - 7 12
7 - 10 9
10 - 15 10
15 - 17 4
Right Option : C
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Question : 2

A random survey of numbers of children of various age group playing in a park was found as follows:

Age Group1-22-33-55-77-1010-1515-17
No of Children536129104

Then the number of children playing between the age group of 10-15 years are ________________.

Right Option : D
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Question : 3

A random survey of numbers of children of various age group playing in a park was found as follows. Children playing between the age group of 5-7 years are:

AgeNo. of Children
1 - 25
2 - 33
3 - 56
5 - 712
7 - 109
10 - 1510
15 - 174
Right Option : C
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Explanation
 
 


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