²é¿´: 430  |  »Ø¸´: 3
µ±Ç°Ö÷ÌâÒѾ­´æµµ¡£
¡¾ÐüÉͽð±Ò¡¿»Ø´ð±¾ÌûÎÊÌ⣬×÷Õßcoolcj½«ÔùËÍÄú 5 ¸ö½ð±Ò
µ±Ç°Ö»ÏÔʾÂú×ãÖ¸¶¨Ìõ¼þµÄ»ØÌû£¬µã»÷ÕâÀï²é¿´±¾»°ÌâµÄËùÓлØÌû

coolcj

½ð³æ (ÕýʽдÊÖ)

[ÇóÖú] ¡¾³·»ØÇóÖú¡¿ÒÑÖªµãºÍÒÑÖªÏßÖ®¼äµÄÆ«²îÔõô¼ÆËãµÄ£¿

ÒÑÖªÏß±ÈÈçy=ax^2+bx+c£¬ÕâÊÇÒ»ÌõÀíÂÛÇúÏߣ¬
ʵÑéµã£¨1£¬1£©¡¢£¨1£¬3£©¡¢£¨2£¬5£©µÈ£¬
ÎÒÏë¼ÆËãÒ»ÏÂÕâЩµãÏà¶ÔÓÚÀíÂÛÇúÏߵķûºÏ³Ì¶È¡£
¸ÃÓÃʲô¹«Ê½¼ÆËãÄØ£¿£¿




°æÖ÷¿ÉÒÔ²Ù×÷ÁË

[ Last edited by coolcj on 2008-5-26 at 13:09 ]

» ²ÂÄãϲ»¶

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

dnangelhj

Ìú¸Ëľ³æ (ÖøÃûдÊÖ)

¡ï
coolcj(½ð±Ò+1,VIP+0): »Ø´ð¾ÍÓÖ½ð±ÒÄÃ
¿´¿´¸ßÊýµÄÊéºÃÁË£¬¿Ï¶¨Óеģ¬
4Â¥2008-04-28 23:32:38
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
²é¿´È«²¿ 4 ¸ö»Ø´ð

×¼²©Ê¿

½ð³æ (ÕýʽдÊÖ)

¡ï
coolcj(½ð±Ò+1,VIP+0):лл£¬¿ÉÊÇ´ð°¸Ç·Í×
Ã²ËÆÕâ¸öÑо¿ÉúµÄ¿Î³Ì-¡¶¹¤³ÌÊýѧ¡·ÀïÓй«Ê½,µ«ÊǼDz»ÇåÊÇÄĸö¹«Ê½ÁË.¼ÆËãÎó²îµÄÄǸö£¬×îС¶þ³Ë·¨£¿Maybe or not¡£
2Â¥2008-04-28 20:26:39
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

nucleus01

ÖÁ×ðľ³æ (ÖøÃûдÊÖ)

Сľ³æ±±Í¥½Ú¶Èʹ

¡ï ¡ï ¡ï
coolcj(½ð±Ò+3,VIP+0):ºÜÏêϸ£¬²»¹ýÕâÊÇÄâºÏÓõİɣ¬ÎҵIJ»ÊÇÄâºÏÇúÏß°¡
Ò»°ãÓÃÏà¹ØÏµÊý¼ìÑé·¨¼ìÑé¡£Ïà¹ØÏµÊýÔ½½Ó½ü1,·ûºÏ³Ì¶ÈÔ½ºÃ¡£
Ïà¹ØÏµÊýR= lxy/sqrt(lxx*lyy)
lxx= sum(xi-xƽ¾ù£©^2
lyy=sum(yi-y(mean))^2
lxy=sum(xi-x(mean))(yi-y(mean))
ˬÊÇÒª¸¶³ö´ú¼ÛµÄ!
3Â¥2008-04-28 23:12:45
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
²»Ó¦Öú È·¶¨»ØÌûÓ¦Öú (×¢Ò⣺ӦÖú²Å¿ÉÄܱ»½±Àø£¬µ«²»ÔÊÐí¹àË®£¬±ØÐëÌîд15¸ö×Ö·ûÒÔÉÏ)
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] 286Çóµ÷¼Á +5 Faune 2026-03-21 5/250 2026-03-21 14:37 by lature00
[¿¼ÑÐ] ³õÊÔ 317 +3 °ëÀ­Ô±û 2026-03-20 3/150 2026-03-21 13:25 by zhukairuo
[¿¼ÑÐ] 0856²ÄÁÏר˶353Çóµ÷¼Á +3 NIFFFfff 2026-03-20 3/150 2026-03-21 10:23 by luoyongfeng
[¿¼ÑÐ] ²ÄÁÏѧѧ˶080502 337Çóµ÷¼Á-Ò»Ö¾Ô¸»ªÖпƼ¼´óѧ +4 ˳˳˳mr 2026-03-18 5/250 2026-03-21 10:22 by luoyongfeng
[¿¼ÑÐ] һ־Ըɽ´ó07»¯Ñ§ 332·Ö ËÄÁù¼¶Òѹý ±¾¿ÆÉ½¶«Ë«·Ç Çóµ÷¼Á£¡ +3 ²»ÏëÀíÄã 2026-03-16 3/150 2026-03-21 03:59 by JourneyLucky
[¿¼ÑÐ] »¯Ñ§Çóµ÷¼Á +4 ÁÙÔó¾³llllll 2026-03-17 5/250 2026-03-21 02:23 by JourneyLucky
[¿¼ÑÐ] 085700×ÊÔ´Óë»·¾³308Çóµ÷¼Á +12 īīĮ 2026-03-18 13/650 2026-03-21 01:42 by JourneyLucky
[¿¼ÑÐ] ²ÄÁÏרҵÇóµ÷¼Á +6 hanamiko 2026-03-18 6/300 2026-03-21 00:24 by JourneyLucky
[¿¼ÑÐ] Ò»Ö¾Ô¸ËÕÖÝ´óѧ²ÄÁÏÇóµ÷¼Á£¬×Ü·Ö315£¨Ó¢Ò»£© +5 sbdksD 2026-03-19 5/250 2026-03-20 22:10 by luoyongfeng
[¿¼ÑÐ] 290Çóµ÷¼Á +7 ^O^Ø¿ 2026-03-19 7/350 2026-03-20 21:43 by JourneyLucky
[¿¼ÑÐ] ÉúÎïѧµ÷¼ÁÕÐÈË£¡£¡£¡ +3 ɽº£Ììá° 2026-03-17 4/200 2026-03-19 21:34 by ÔõôÊÍ»³
[¿¼ÑÐ] 288Çóµ÷¼Á£¬Ò»Ö¾Ô¸»ªÄÏÀí¹¤´óѧ071005 +5 ioodiiij 2026-03-17 5/250 2026-03-19 18:22 by zcl123
[¿¼ÑÐ] Ò»Ö¾Ô¸¸£´ó288Óлú»¯Ñ§£¬Çóµ÷¼Á +3 Сľ³æ200408204 2026-03-18 3/150 2026-03-19 13:31 by houyaoxu
[¿¼ÑÐ] ±¾¿ÆÖ£ÖÝ´óѧÎïÀíѧԺ£¬Ò»Ö¾Ô¸»ª¿Æ070200ѧ˶£¬346Çóµ÷¼Á +4 ÎÒ²»ÊÇÒ»¸ù´Ð 2026-03-18 4/200 2026-03-19 09:11 by ¸¡ÔÆ166
[¿¼ÑÐ] ²ÄÁϹ¤³Ìר˶µ÷¼Á +5 204818@lcx 2026-03-17 6/300 2026-03-18 22:55 by 204818@lcx
[¿¼ÑÐ] ²ÄÁÏר˶306Ó¢Ò»Êý¶þ +10 z1z2z3879 2026-03-16 13/650 2026-03-18 14:20 by 007_lilei
[¿¼ÑÐ] 334Çóµ÷¼Á +3 Ö¾´æ¸ßÔ¶ÒâÔÚ»úÐ 2026-03-16 3/150 2026-03-18 08:34 by lm4875102
[¿¼ÑÐ] 293Çóµ÷¼Á +11 zjlµÄºÅ 2026-03-16 16/800 2026-03-18 08:10 by zhukairuo
[¿¼ÑÐ] 085601Çóµ÷¼Á +4 Du.11 2026-03-16 4/200 2026-03-17 17:08 by ruiyingmiao
[¿¼ÑÐ] Ò»Ö¾Ô¸ËÕÖÝ´óѧ²ÄÁϹ¤³Ì£¨085601£©×¨Ë¶ÓпÆÑо­ÀúÈýÏî¹ú½±Á½¸öʵÓÃÐÍרÀûÒ»ÏîÊ¡¼¶Á¢Ïî +6 ´ó»ðɽС»ðɽ 2026-03-16 8/400 2026-03-17 15:05 by ÎÞи¿É»÷111
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û