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Question

# In a frequency distribution, the first and the second classes are 0-10 and 10-20 respectively. What is the lower limit of the fourth class if the class size is same?

A
40
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B
50
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C
20
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D
30
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Solution

## The correct option is D 30In the given classes, the class size = upper limit − lower limit = 10 − 0 = 10 Hence the first four classes are, 1st class interval 0-10 2nd class interval 10-20 3rd class interval 20-30 4th class interval 30-40 The fourth class is 30-40. Hence, the lower limit of the fourth class is 30.

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