Question

Find the class mark of class interval 10-15

Answer 1

Answer:

Step-by-step explanation:

Class mark is also called class size.

Class mark = upper class limit (ucl) - lower class limit (lcl)

So , 15-10 =5

So , 5 is th class mark.

Answer 2

Answer:

The Class mark of the Class Interval 10-15 = 12.5

Step-by-step explanation:

Class Interval:

Class Interval refers to the numerical width of any classes in a particular distribution.

Class mark:

• Class mark is defined as the mid-value of each class interval.

Formula:

• Formula to find class mark for a class interval is

          Class mark = (Upper limit + lower limit)/2

                           or

          Class mark = sum of boundaries/2

• Given Class Interval is 10-15

          Here Upper limit = 15, and Lower limit = 10

          We know, Class marks =  (Upper limit + lower limit)/2

          Class mark of the Class Interval 10-15 is

              Class mark = (15+10)/2

                                  = 25/2  

                                  = 12.5

          Hence,

          The Class mark of the Class Interval 10- 15 = 12.5

                               

Know more about Class Interval:

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