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zaq123321
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- ¹ó±ö: 0.247
- ½ð±Ò: 10784.8
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- ×¢²á: 2007-06-17
- ÐÔ±ð: MM
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Сľ³æ: ½ð±Ò+0.5, ¸ø¸öºì°ü£¬Ð»Ð»»ØÌû
Сľ³æ: ½ð±Ò+0.5, ¸ø¸öºì°ü£¬Ð»Ð»»ØÌû
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I am not very sure my understanding is correct or wrong. Deviation is ·½²î£¬standard deviation is ±ê×¼²î, square root of deviation, about second order momentum. Bias is Æ«, difference between sample and expectation, about first order of momentum [ ·¢×ÔÊÖ»ú°æ http://muchong.com/3g ] |

2Â¥2015-07-25 23:30:59
wangqing2002108
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Сľ³æ: ½ð±Ò+0.5, ¸ø¸öºì°ü£¬Ð»Ð»»ØÌû
Сľ³æ: ½ð±Ò+0.5, ¸ø¸öºì°ü£¬Ð»Ð»»ØÌû
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deviation£º Ãû´Ê£¬Æ«²î¡¢Îó²î¡¢Æ«Ïò¡¢ÇãÏò ´ÓÒѽ¨Á¢µÄ¹ý³Ì»ò½ÓÊܵıê×¼³ö·¢µÄ¶¯×÷£¬¼´Ïà¶ÔÓÚijÖÖ±ê×¼ÖµµÃÆ«Àë³Ì¶È£¬¸ü¾ßÓп͹ÛÐÔ¡£ bias£º Ãû´Ê£¬Æ«¼û¡¢Æ«Ñ¹¡¢Æ«²î¡¢Æ«ÐÄ¡¢Æ«°®£¬Ð±Ïß Ô޳ɻò·´¶ÔÒ»¼þÊ£¬¸öÈË»òÍÅÌåÓëÆäËûÏà±È£¬Í¨³£±»ÈÏΪÊDz»¹«Æ½µÄÒ»ÖÖ·½Ê½¡£ ÓÈÖ¸·Á°¹«Æ½ÅÐ¶ÏµÄÆ«¼û£¬¸ü¾ßÓÐÖ÷¹ÛÐÔ |

3Â¥2015-07-26 08:56:34














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