Question

In the class intervals 10-20, 20-30, the number 20 is included in:
10-20
20-30
None of the above

Answer 1

Answer:

Since, the class interval 10-20 is the first interval of frequency distribution and 20-30 is the next one but the number 20 is present in both intervals.

Answer 2

Answer:

Correct option is

B

20−30

The number is always included in the lower limit of the class interval. Hence, 20 is included in 20−30