find the mean of the following frequency distribution by step deviation method?​

1 thought on “find the mean of the following frequency distribution by step deviation method?​”

1. Step-by-step explanation:

   Class interval width (i) = 10

   Converting the given data into frequency distribution table

   Class interval X No. of employees

   F u=iX−A

   Fu 11-21 16 2 -2 -4 21-31 26 4 -1 -4 31-41 36=A 6 0 0 41-51 46 8 18 51-61 56 10 220 Σf=30 Σfu=20

   Mean = A+ΣfΣfu=36+3020×10=36+6.66=42.66

   hope it works

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