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What is the mean deviation of the first 10 natural numbers?

Options

  1. A2
  2. B2.5
  3. C3
  4. D3.5

Correct answer

B. 2.5

Step-by-step solution

Mean of 10 natural numbers x = 1+2+3+ .+10 10 = 10 11 2 10 =5.5 Mean deviation |1-5.5|+|2-5.5|+|3-5.5|+ .+|10-5.5| 10 aligned & = 4.5+3.5+2.5+1.5+0.5+0.5+1.5+2.5+3.5+4.5 10 & 25 10 =2.5 aligned

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