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

Find the frequency of Class 20-40 by using the given data:

Class SizeFrequency
20-408
40-604
60-807
80-1009
100-1202
Total32
Right Option : B
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Explanation
Question : 2

A survey was carried out for the purpose of determining the number of children in each family. The results are shown in the table below. Calculate the percentage of families which have more than 2 children. 

Number of children01234
Frequency14762

 

Right Option : B
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Explanation
Question : 3

Find the frequency of Class 60-80 by using the given data:

Class SizeFrequency
20-408
40-604
60-807
80-1009
100-1202
Total32
Right Option : C
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Explanation
 
 


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