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lanmori

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ÓÐÁù¸öÊý£¬ÔÚ45-95Ö®¼ä£¬Æ½¾ùֵΪ70£¬ÀëɢϵÊýΪ24.4%£¬ÇëÎÊÕâÁù¸öÊýÓм¸¸ö±È¾ùÖµ´ó£¿
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hank612

ÖÁ×ðľ³æ (ÖøÃûдÊÖ)

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Сľ³æ: ½ð±Ò+0.5, ¸ø¸öºì°ü£¬Ð»Ð»»ØÌû
ÀëɢϵÊýΪ±ê×¼·½²î³ýÒÔÆ½¾ùÖµ sigma / mu
´Ó¶ø sigma=70* 24.4% = 17.08
variance = 17.08^2 = 291.7264

Because (65, 65, 65, 65, 65, 95) has variance 150, and
(57 57 58 58 95 95) has variance 375.2,
¹ÊÁù¸öÊýÓбȾùÖµ´óµÄÊýÖÁÉÙÓÐÁ½¸ö,È»ºóÓɶԳÆÐÔ,×î¶àÓÐËĸö.
We_must_know. We_will_know.
2Â¥2013-07-18 00:36:18
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

Ijinisam

½ð³æ (ÕýʽдÊÖ)

ÒýÓûØÌû:
2Â¥: Originally posted by hank612 at 2013-07-18 00:36:18
ÀëɢϵÊýΪ±ê×¼·½²î³ýÒÔÆ½¾ùÖµ sigma / mu
´Ó¶ø sigma=70* 24.4% = 17.08
variance = 17.08^2 = 291.7264

Because (65, 65, 65, 65, 65, 95) has variance 150, and
(57 57 58 58 95 95) has variance 375.2 ...

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