Answer:
C) 4-12
Step-by-step explanation:
A) 0-7
Its frequency will only be 3 and there are no numbers from 0 till 3 therefore, this is not the best interval.
B) 4-5
This interval is too short. If you go on with the intervals, there will be a lot of sets. Therefore, this is not right.
C) 4-12
The set starts from 4 and so does the interval. The interval 4-12 will have a frequency of 6 and the next intervals will be 13-21, 22-30, 31-39.
Therefore, this is the best interval for the data.
D) 0-10
There are no numbers from 0-3 or 9-10, therefore this is not the best interval.
The correct answer is option C) 4-12
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