(i) The class mark of interval 15-30 is
Answers
Answered by
27
Answer:
Class mark is the average of upper limit and lower limit of the given class interval.
Therefore, class mark of 20−30 interval is
2
20+30
=
2
50
=25
Class mark of 10−20 interval is
2
10+20
=
2
30
=15
Answered by
3
Class mark of class interval 15-25 is 20.
Similar questions