Question
निम्नलिखित सारणी 50 विद्यार्थियों द्वारा किसी सप्ताह में खेल के मैदान में व्यतीत किए गए घण्टों को दर्शाती है :
| घण्टे | 0 | 2 | 4 | 6 | 8 | 10 |
| विद्यार्थियों की संख्या | 10 | 6 | 8 | 6 | 10 | 10 |
विद्यार्थियों द्वारा वांछित घण्टों के माध्य और मानक विचलन परिकलित कीजिए।
Answer :
Word Count : 365
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Skip in 10
सबसे पहले, दिए गए डेटा को व्यवस्थित करते हैं: | घण्टे (x) | 0 | 2 | 4 | 6 | 8 | 10 | | --------------------------- | -- | - | - | - | -- | -- | | विद्यार्थियों की संख्या (f) | 10 | 6 | 8 | 6 | 10 | 10 | कुल विद्यार्थी: ( N = 10 + 6 + 8 + 6 + 10 + 10 = 50 ) 1. माध्य (Mean) निकालना: माध्य का सूत्र है: [ \bar{x} = \frac{\sum f x}{\sum f} ] [ \sum f x = (10 \cdot 0) + (6 \cdot 2) + (8 \cdot 4) + (6 \cdot 6) + (10 \cdot 8) + (10 \cdot 10) ] क्रमशः गुणा करके जोड़ते हैं: *
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