Question

The class interval of the given observation is 10 to 15 then the classmark of interval will be

Answer 1

Step-by-step explanation:

Given:The class interval of the given observation is 10 to 15

To find:Classmark of interval

Solution:

Class mark of any class interval is given by

$\bold{\pink{x_i = \frac{lower \: class \: limit + upper \: class \: limit}{2}}}$

Here in the given class interval 10-15

Lower class limit = 10

Upper class limit= 15

Class mark:

$x_i = \frac{10 + 15}{2} \\ \\ x_i = \frac{25}{2} \\ \\ x_i = 12.5$

Thus ,

Class mark of class interval

(10-15) is 12.5

Hope it helps you.

To learn more on brainly:

1)The upper limit of a class interval is 42.5 and the class mark is 40 then the lower limit is

https://brainly.in/question/14298540

2)Find the class mark of the class 40-50

https://brainly.in/question/16213483

3) The upper limit and the class mark of a class interval are 145 and 142.5 respectively what is the lower limit

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Answer 2

Step-by-step explanation:

Class mark= Upper class limit+lower class limit/2

=15+10/2

=25/2

=12.5

Hope it helps!