Question

The class mark of class interval whose upper limit is 105 and the class size is 20 would be _______________

Answer 1

Answer:

Class mark will be 95.

Refer to pic

Answer 2

Answer:

class mark = ?

lower limit= ?

Upper limit= 105

Class size= 15

Step-by-step explanation:

Class size=Upper limit -Lower limit

=15=105-x

=x=105-15

=x=90

Lower limit=90

CLASS Mark=Upper limit+Lower limit/2

=105+90/2

=195/2

=97.5 .