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बीस प्रेक्षणों का माध्य तथा मानक विचलन क्रमश : 10 तथा 2 है । जाँच करने पर यह पाया गया कि प्रेक्षण 8 गलत है । निम्न में से प्रत्येक का सही माध्य तथा मा

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बीस प्रेक्षणों का माध्य तथा मानक विचलन क्रमश : 10 तथा 2 है । जाँच करने पर यह पाया गया कि प्रेक्षण 8 गलत है । निम्न में से प्रत्येक का सही माध्य तथा मानक विचलन ज्ञात कीजिए यदि
(i) गलत प्रेक्षण हटा दिया जाए ।
(ii) उसे 12 से बदल दिया जाए ।
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1 Answer

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Correct Answer - (i) `10.1, 1.99` (ii) ` 102.2, 1.98`
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