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

The number of times a particular observation occurs in a given data is called ________________

Right Option : B
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Question : 2

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 : 3

From the frequency table, the percentage of families with less than 3 children is  large frac {x}{40} times 100.  Find the value of  x:

Number of children01234
Number of families2511157

 

Right Option : D
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