Question

20. In a frequency distribution with classes 0-10, 10-20, 20-30, 30-40. The class size and the lower
limit of 4th class interval is *

15 and 30
10 and 30
20 and 40
None of these​

Answer 1

Answer:

None of these.........

Answer 2

Answer:

C. 10 and 30

Step-by-step explanation:

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