Mathematics · Statistics
100 आकार की समष्टि (population) से बिना प्रतिस्थापन के सरल यादृच्छिक प्रतिचयन (simple random sampling without replacement) द्वारा 10 इकाइयाँ चुनी जाती हैं। प्रतिदर्श प्रसरण s 2 = 1 10 ∑ i=1 to 10 (y i - ȳ) 2 पर विचार करें। समष्टि प्रसरण σ 2 = 1 100 ∑ i=1 to 100 (Y i - Ȳ) 2 का एक निष्पक्ष आकलक (unbiased estimate) क्या है?
- 1100 111 s 2
- 2100 99 s 2
- 310 11 s 2
- 4s 2✓
सही उत्तर देखें
s 2
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