Economy, asked by luinaier76, 7 months ago

24. Calculate the arithmetic mean for the following discrete frequency distribution series,
Marks(20,30,40,50,60,70)
no of students (8,12,20,10,6,4)

Answers

Answered by ayush103862

2

Answer:

20×8=160,30×12=360,40×20=800,50×10=500,60×6=360,70×4=280

Sum of All=2460 (fixi)

Sum of fi=270

2460/270=9.1

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