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If a variable takes values 0,1,2,3, , n with frequencies 1, C(n, 1), C(n, 2), C(n, 3), ., C(n, n) respectively, then the arithmetic mean is

Options

  1. A2n
  2. Bn +1
  3. Cn
  4. Dn 2

Correct answer

D. n 2

Step-by-step solution

The arithmetic mean is always between minimum and maximum value. So, n 2 is arithmetic mean.

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