In a frequency distribution, the first and the second class intervals are 0 -10 and 10 -20. Then, the lower limit of the fourth class interval is

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Solution

The correct option is D 30
The class size is 10.
Hence, the first four class intervals are:
$0 - 10$
$20 - 30$
$20 - 30$
$30 - 40$
Therefore, the fourth class interval is $30 - 40$ .

Therefore, the lower limit of the fourth class interval is $30$ .

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Question 14

In a frequency distribution with classes 0-10, 10-20 etc., the size of the class intervals is 10. The lower limit of fourth class is:

(a) 40

(b) 50

(d) 30

Question 14

In a frequency distribution with classes 0-10, 10-20 etc., the size of the class intervals is 10. The lower limit of fourth class is:

(a) 40

(b) 50

(d) 30

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