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Question

# Convert the following data into grouped frequency table with class interval length of 5. Find the third interval frequency:12,12,11,12,2,3,3,3,4,4,2,2,5,6,7,4,7,8,15,15,20,20

A
2
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B
5
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C
10
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D
4
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Solution

## The correct option is B 5Arrange the data in increasing order: 2,2,2,3,3,3,4,4,4,5,6,7,7,8,11,12,12,12,15,15,20,20Form the required frequency distribution table with interval of 5 Class interval Frequency 0−5 10 6−11 5 12−17 5 18−23 2Arrange the data in order: 2,2,2,3,3,3,4,4,4,5,6,7,7,8,11,12,12,12,15,15,20,20So, the third interval frequency is 5.

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