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Question
The sixth class interval for a grouped data whose first two class intervals are 10 – 15 and 15 – 20 is ______.
Solution
The sixth class interval for a grouped data whose first two class intervals are 10 – 15 and 15 – 20 is 35 – 40.
Explanation:
First interval = 10 – 15
Second interval = 15 – 20
Clearly, Size of class interval = 5
Therefore, Third interval = 20 – 25
Fourth interval = 25 – 30
Fifth interval = 30 – 35
Sixth interval = 35 – 40
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