গড় থেকে 3, 10, 10, 4, 7, 10, 5 তথ্যের গড় বিচ্যুতি কত?

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NTPC CBT 2 2016 Previous Paper 1 (Held On: 17 Jan 2017 Shift 1)
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  1. 7
  2. 19/7
  3. 50/7
  4. 18/7

Answer (Detailed Solution Below)

Option 4 : 18/7
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প্রদত্ত:

তথ্য হল 3, 10, 10, 4, 7, 10, 5

অনুসৃত সূত্র:

গড় সম্পর্কে গড় বিচ্যুতি

\(∑\rm \frac{|x_{i} - x̅|}{n}\) যেখানে x̅ = গড়

xi = স্বতন্ত্র পদ

n = মোট পদ সংখ্যা

গড় = সমস্ত পদের যোগফল/পদগুলির মোট সংখ্যা

গণনা:

n = একটি তথ্যের মোট সংখ্যা = 7

গড় x̅ = (3 + 10 + 10 + 4 + 7 + 10 + 5)/7 = 7

গড় থেকে গড় বিচ্যুতি = \(∑\rm \frac{|x_{i} - x̅|}{n}\)

গড় থেকে গড় বিচ্যুতি = (1/7) × [4 + 3 + 3 + 3 + 0 + 3 + 2]

∴ গড় বিচ্যুতি = 18/7

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