²é¿´: 634  |  »Ø¸´: 2

lanmori

Òø³æ (СÓÐÃûÆø)

[½»Á÷] ¿°±È°ÂÊýµÄÌâÄ¿£¬»ú¾ßÌôÕ½ÐÔ ÒÑÓÐ2È˲ÎÓë

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

» ²ÂÄãϲ»¶

ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

hank612

ÖÁ×ðľ³æ (ÖøÃûдÊÖ)

¡ï
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 ...

¿´ÆðÀ´ºÜÓеÀÀí
ÆÕÌì֮ϣ¬Äª·ÇÎáÓÑ
3Â¥2013-08-30 21:33:34
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ lanmori µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] 317Çóµ÷¼Á +12 Éê×ÓÉêÉê 2026-03-19 18/900 2026-03-22 22:23 by luoyongfeng
[¿¼ÑÐ] 328Çóµ÷¼Á£¬Ó¢ÓïÁù¼¶551£¬ÓпÆÑо­Àú +6 ÉúÎ﹤³Ìµ÷¼Á 2026-03-17 10/500 2026-03-22 20:22 by edmund7
[¿¼ÑÐ] 310Çóµ÷¼Á +4 baibai1314 2026-03-16 4/200 2026-03-22 20:19 by edmund7
[¿¼ÑÐ] 306Çóµ÷¼Á +6 chuanzhu´¨Öò 2026-03-18 6/300 2026-03-22 19:39 by ¹«èªåÐÒ£
[¿¼ÑÐ] 08¹¤¿Æ 320×Ü·Ö Çóµ÷¼Á +11 À滨çóÍí·ç 2026-03-17 11/550 2026-03-22 17:42 by luoyongfeng
[¿¼ÑÐ] 289Çóµ÷¼Á +7 »³èªÎÕè¤l 2026-03-20 7/350 2026-03-22 15:57 by ColorlessPI
[¿¼ÑÐ] Ò»Ö¾Ô¸ÖÐÄÏ´óѧ»¯Ñ§Ñ§Ë¶0703×Ü·Ö337Çóµ÷¼Á +3 niko- 2026-03-22 3/150 2026-03-22 15:15 by ÑîÑîÑî×Ï
[¿¼ÑÐ] 291 Çóµ÷¼Á +3 »¯¹¤2026½ì±ÏÒµÉ 2026-03-21 3/150 2026-03-22 14:26 by ColorlessPI
[¿¼ÑÐ] ²ÄÁÏѧ˶301·ÖÇóµ÷¼Á +7 Liyouyumairs 2026-03-21 7/350 2026-03-21 22:31 by peike
[¿¼ÑÐ] 0703»¯Ñ§297Çóµ÷¼Á +3 Daisy¡î 2026-03-20 3/150 2026-03-21 17:45 by ColorlessPI
[¿¼ÑÐ] 085700×ÊÔ´Óë»·¾³308Çóµ÷¼Á +12 īīĮ 2026-03-18 13/650 2026-03-21 01:42 by JourneyLucky
[¿¼ÑÐ] Ò»Ö¾Ô¸»ªÖпƼ¼´óѧ£¬080502£¬354·ÖÇóµ÷¼Á +5 ÊØºòϦÑôCF 2026-03-18 5/250 2026-03-21 01:06 by JourneyLucky
[¿¼ÑÐ] Ò»Ö¾Ô¸ÖØÇì´óѧ085700×ÊÔ´Óë»·¾³×¨Ë¶£¬×Ü·Ö308Çóµ÷¼Á +3 īīĮ 2026-03-18 3/150 2026-03-21 00:39 by JourneyLucky
[¿¼ÑÐ] 295Çóµ÷¼Á +4 Ò»Ö¾Ô¸¾©Çø211 2026-03-18 6/300 2026-03-20 23:41 by JourneyLucky
[¿¼ÑÐ] Ò»Ö¾Ô¸ Î÷±±´óѧ £¬070300»¯Ñ§Ñ§Ë¶£¬×Ü·Ö287£¬Ë«·ÇÒ»±¾£¬Çóµ÷¼Á¡£ +4 ³¿»èÏßÓëÐǺ£ 2026-03-19 4/200 2026-03-20 22:15 by JourneyLucky
[¿¼ÑÐ] ÉúÎïѧµ÷¼ÁÕÐÈË£¡£¡£¡ +3 ɽº£Ììá° 2026-03-17 4/200 2026-03-19 21:34 by ÔõôÊÍ»³
[¿¼ÑÐ] 301Çóµ÷¼Á +4 A_JiXing 2026-03-16 4/200 2026-03-17 17:32 by ruiyingmiao
[¿¼ÑÐ] Ò»Ö¾Ô¸ÄϾ©´óѧ£¬080500²ÄÁÏ¿ÆÑ§Ó빤³Ì£¬µ÷¼Á +4 Jy? 2026-03-16 4/200 2026-03-17 11:02 by gaoqiong
[¿¼ÑÐ] ¿¼Ñе÷¼Á +3 ä¿ya_~ 2026-03-17 5/250 2026-03-17 09:25 by Winj1e
[¿¼ÑÐ] 11408 Ò»Ö¾Ô¸Î÷µç£¬277·ÖÇóµ÷¼Á +3 zhouzhen654 2026-03-16 3/150 2026-03-17 07:03 by laoshidan
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û