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

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Solution

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

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

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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:

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

The correct option is D 30The class size is 10. Hence, the first four classes are: 0−10 20−30 20−30 30−40 Therefore, the fourth class is 30−40. Therefore, the lower limit of the fourth class is 30.

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

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