Students of your class obtained following marks in Statistics in the weekly test: Marks 4 5 6 7 8 Number of Students 12 10 18 20 24 Calculate arithmetic mean using Direct and Assumed Mean Methods (Ans. X = 6.40 marks)
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- Mark's(x) students(f) fx
- 4. 12. 48
- 5. 10. 50
- 6. 18. 108
- 7. 20. 140
- 8. 24. 192
- {f=84. {fx=538
A.m={fx/{f
=538/84
=6.40
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