Math, asked by sujithkumar3991, 1 year ago

Give formula for class - size and class mark and find them for class 20 -30

Answers

Answered by diyasikka
1

Answer:

Class size=10,class mark=25

Step-by-step explanation:

Class size=upper limit - lower limit

=30-20

=10

(class mark means class interval)

Class mark=lower limit+upper limit

2

=20+30

2

= 50 =25

2

(class mark is the middle value of class)

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