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AP EAMCET20225 Jul 2022Morning ShiftMathematicsStatisticsActual

If the mean deviation of the data 1,1+d , 1+2 d, , 1+100 d,(d>0) from their mean is 255 , then ' d ' is equal to

Options

  1. A10.1
  2. B10.2
  3. C10.3
  4. D10.4

Correct answer

A. 10.1

Step-by-step solution

Mean x = Sum of quantities n = n 2 (a+l) n [l= last team ] aligned & = 1 2 (a+l)= 1 2 (1+1+100 d) & =1+50 d aligned MD = 1 n |x_i- x | aligned 255= 1 101 [50 d & +49 d+48 d+ & +d+0+d+ .+50 d] aligned 255= 2 d 101 [ 50 51 2 ]d= 255 101 50 51 =10.1

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