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यदि 18 आकड़ों का वितरण Sigma(x(i)-5)=3" त...

यदि 18 आकड़ों का वितरण `Sigma(x_(i)-5)=3" तथा "Sigma(x_(i)-5)^(2)=43` हो तो माध्य एवं मानक विचलन ज्ञात कीजिए ।

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