Question

Class interval 10-20.20-30.30-40.40-50.50-60.60-70.70-80. Frequency 12.30.34.65.45.25.18

Answer 1

Answer:

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Now lower limit of modal class (l)=30

Frequency (f1) of modal class =20

frequency (f0) of preceding the modal class =12

frequency (f2) of the class succeeding the modal class=11

Class size=10

Answer 2

here is your answer mate

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