Question

The class interval of a given observation is 10 to 15, then the class mark for this interval will be:

Answer 1

Answer:

class mark =10+15/2

=25/2

12.5=

Answer 2

Question :

The class interval of a given observation is 10 to 15. Find the class mark for this interval.

Answer :

The class mark for the given class interval is 12.5

Given :

Class interval of the observation is 10 to 15

To find :

The class mark for the given interval

Solution :

The class mark of an interval is the value midway between the actual lower limit and the actual upper limit of the class interval

In the given class interval ,

the lower limit = 10

the lower limit = 10And the upper limit = 15

Hence, the class mark will be

= (10+15)/2

= 25/2

= 12.5

Therefore, the class mark for the given class interval is 12.5

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