Calculate means from the following data using both direct method , shortcut method and step deviation method
value: 5,15,23,35,45,55,65,75
frequency:15,20,25,24,12,31,71,52
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Find out arithmetic mean using Direct Method and Short-cut Method. ... Calculation of mean by short cut method ... 12. 13. 14. 15. 20 44 65 28 45 67 30 50 (A) 68 39 53 70 40 60 75, -30 -06 15 ... (f), Multiplication of mid value and frequency (fm).
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