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JEE Mains · Maths · STD 11 - 13. statistics

यदि संख्याओं \(1,1+d, \ldots, 1+100 d\) के माध्य से माध्य-विचलन \(255\) है, तो \(d\) का एक मान है

  1. A \(10.1\)
  2. B \(5.05\)
  3. C \(20.2\)
  4. D \(10\)
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Answer & Solution

Correct Answer

(A) \(10.1\)

Step-by-step Solution

Detailed explanation

\(\bar x = \frac{1}{{101}}\left[ {1 + \left( {1 + d} \right) + \left( {1 + 2d} \right).....\left( {1 + 100d} \right)} \right]\) \( = \frac{1}{{101}} \times \frac{{101}}{2}\left[ {1 + \left( {1 + 100d} \right)} \right] = 1 + 50d\) mean deviation from mean…
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