What is the class size of class intervals 20-30 ?
Answers
Answered by
3
Answer:
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
4
Answer:
25 is the class mark here....
20+30/2
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