Find the sum of lower limit of fifth and upper limit of sixth class interval for a grouped data whose first and second class intervals are 10 – 15 and 15 – 20.

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Solution

The correct option is B 70
The first and the second class intervals are given as 10 – 15 and 15 – 20.
Here the range of the grouped data is 5.
Moving forward, class intervals will be:
Third class interval = 20 – 25
Fourth class interval = 25 – 30
Fifth class interval = 30 – 35
and,
Sixth class interval = 35 – 40
The lower limit of fifth interval is 30 and the upper limit of the sixth interval is 40.
Hence, sum = 30 + 40 = 70

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Q. Find the sum of lower limit of fifth and upper limit of sixth class interval for a grouped data whose first and second class intervals are 10 – 15 and 15 – 20.

Question 46

The sixth class interval for a grouped data whose first two class intervals are 10-15 and 15-20 is ___

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16

and

10

, the class-interval is?

Q. The lower limit and upper limit of an exclusive class interval are

15

and

25

respectively. Then the class mark is _____

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