Question

in frequency distribution the class 30- 40, 40-50, 50_60 etc the size of the class interval is 10 then the class marks of the 6th class is ?

Answer 1

Answer:

80-90

Step-by-step explanation:

30-40

40-50

50-60

60-70

70-80

80-90✓ This is 6th class..

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