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लघु विधि द्वारा माध्य तथा मानक विचलन ज्ञात कीजिए : `{:(x_(i),60,61,62,63,64,65,66,67,68),("f"_(i),2,1,12,29,25,12,10,4,5):}`

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लघु विधि द्वारा माध्य तथा मानक विचलन ज्ञात कीजिए :
`{:(x_(i),60,61,62,63,64,65,66,67,68),("f"_(i),2,1,12,29,25,12,10,4,5):}`
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Correct Answer - ` 64, 1. 69`
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