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An analysis of monthly wages paid to the workers in two firms A and B belonging to the same industry the following result: The average of monthly wages and variance of distribution of wages of all the workers in the firms A and B taken together are

Options

  1. A₹ 1860,100
  2. B₹ 1750,100
  3. C₹ 1800 ~m , 81
  4. DNone of above

Correct answer

D. None of above

Step-by-step solution

Combined Average = 500 1860+600 1750 1100 =1800 Combined Variance aligned & = 500(81+3600)+600(100+2500) 1100 & = (5 3681)+(6 2600) 1100 3092 aligned

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