²é¿´: 19166  |  »Ø¸´: 3

Shoney

ľ³æ (ÖøÃûдÊÖ)

[ÇóÖú] SDÓëSEMÓÐÇø±ðÂð£¿

SD: standard deviation
SEM: standard error of the mean
ÕâÁ½ÕßÓÐÇø±ðÂð£¿
»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:

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

ºïÆÕ·ò¶û

Òø³æ (ÕýʽдÊÖ)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
amisking: ½ð±Ò+2, ¹ÄÀø·¢Ìû°ïÖú½â´ðÎÊÌâ¡£ 2012-06-20 20:38:26
Shoney: ½ð±Ò+1 2012-06-21 10:52:43
The standard error is the standard
deviation of the sampling
distribution of a statistic . [1] The
term may also be used to refer to
an estimate of that standard
deviation, derived from a particular
sample used to compute the
estimate.
For example, the sample mean is
the usual estimator of a population
mean. However, different samples
drawn from that same population
would in general have different
values of the sample mean. The
standard error of the mean (i.e., of
using the sample mean as a
method of estimating the
population mean) is the standard
deviation of those sample means
over all possible samples (of a
given size) drawn from the
population. Secondly, the standard
error of the mean can refer to an
estimate of that standard
deviation, computed from the
sample of data being analyzed at
the time.
¿´ÆðÀ´Òâ˼²î²»¶à

[ ·¢×ÔÊÖ»ú°æ http://muchong.com/3g ]
Ïò×ÅÌ«ÑôÉú³¤
2Â¥2012-06-20 18:09:28
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

Shoney

ľ³æ (ÖøÃûдÊÖ)

ÒýÓûØÌû:
2Â¥: Originally posted by ºïÆÕ·ò¶û at 2012-06-20 18:09:28
The standard error is the standard
deviation of the sampling
distribution of a statistic .  The
term may also be used to refer to
an estimate of that standard
deviation, derived from a particula ...

Á½ÕߵļÆË㹫ʽ²»ÖªµÀÓвî±ðû£¿Ò»°ãÓÃÄĸö°¡£¿
3Â¥2012-06-21 08:45:11
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

nicknelson

ÖÁ×ðľ³æ (Ö°Òµ×÷¼Ò)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
Shoney: ½ð±Ò+1 2012-06-21 10:52:50
SDÊDZê׼ƫ²î£¬SEMÊDZê×¼Îó²î£¬·´Ó¦µÄ¶«Î÷²»Ò»Ñù¡£×öͼʱÓÃSEMµÄ»°£¬ÄǸöbar¿´×ÅС£¬ËùÒԺܶàÈËÓÃSEM¡£µ«ÊÇÓÃSDҲûÎÊÌ⣬ÆäʵSD¸üÄÜ·´Ó¦×éÄÚÑù±¾¼äµÄÆ«²î¡£
4Â¥2012-06-21 09:02:34
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ Shoney µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[»ù½ðÉêÇë] ûÓÐÈκÎÏûÏ¢-ÊDz»ÊǾÍÁ¹ÁË +9 ͼÀ²Í¼À² 2026-08-24 10/500 2026-08-25 11:59 by ÄϺ£Ð¡¸ç
[»ù½ðÉêÇë] ÈËÆø²»ÐÐÁË +11 fansofjerry 2026-08-21 11/550 2026-08-25 11:04 by ¹Â¶ÀµÄÓ¢ÐÛ6
[»ù½ðÉêÇë] 2026¹ú×ÔÈ»º¯ÆÀ·Ñµ½ÕË +19 ÑòÑü°å 2026-08-21 22/1100 2026-08-25 10:38 by popular289
[½Ìʦ֮¼Ò] µ¼Ê¦Í²ۣºÎÒÔõô̯ÉÏÁËÕâô¸ö¼«Æ·Ñо¿Éú£¡ +3 ËÕ¶«ÆÂ¶þÊÀ 2026-08-23 3/150 2026-08-25 10:35 by shisan1313
[»ù½ðÉêÇë] 2026ÄêµÄ¹ú¼ÒÉç¿Æ»ù½ðÏîĿͨѶÆÀÉóµÄйæÔòÓëж¯Ïò¡¢ÐÂÌôÕ½ +5 process2012 2026-08-23 7/350 2026-08-25 09:42 by huixian257
[»ù½ðÉêÇë] ½ñÌì»ù½ð»á³ö½á¹ûÂð£¿20260819 +17 kkkl_v 2026-08-19 18/900 2026-08-25 09:41 by windflowerwy
[»ù½ðÉêÇë] Ö»ÓÐÿÄêÕâÖÖʱºòÀ´¹ä¹äСľ³æ +25 yaoyewhu2008 2026-08-20 27/1350 2026-08-25 08:01 by Equinoxhua
[»ù½ðÉêÇë] Èç¹û´Ë¿ÌÄãÕýÔÚΪ¹ú»ù¸Ðµ½½¹ÂÇ£¬²»·ÁÀ´ÌýÌýÕâÊס¶»ù½ðÖ®Íâ¡· +7 scalable 2026-08-24 7/350 2026-08-24 23:01 by anata1209
[»ù½ðÉêÇë] filecode£¬4¸öjtjcÁË +14 ziyangfang 2026-08-19 17/850 2026-08-24 18:37 by ¹þ¹þ¸ò£¿
[»ù½ðÉêÇë] ½ñÈÕ²»·Å°ñ£¿Íø´«¹ú×ÔȻԤ¼Æ 8 Ô 27 Èտɲé½á¹û +17 ҽѧÀÏÄк¢ 2026-08-20 21/1050 2026-08-24 14:21 by refreshing11
[»ù½ðÉêÇë] ÈÃÎÒÖÐÒ»¸öÃæÉϰɣ¡ +13 ´óƼ1987 2026-08-20 16/800 2026-08-24 10:23 by ̫ɵÁË
[»ù½ðÉêÇë] ·Å°ñǰµÄ²»µ­¶¨ 20+4 snowwithsea 2026-08-19 17/850 2026-08-24 10:20 by echo8914667
[»ù½ðÉêÇë] ¿ÆÑй¶ùÌ«ÄÑÁË +18 ÎÒ4´ó°×²Ë 2026-08-20 19/950 2026-08-24 09:47 by ¿­¶÷¹ãÊ¢´ß»¯·ÖÎ
[»ù½ðÉêÇë] ʲôʱºò¿ª½±£¿ +10 CrisMessi 2026-08-18 11/550 2026-08-24 06:50 by ¿ªÐĵÄСʨ×Ó
[½Ìʦ֮¼Ò] Ìø²ÛºóÔÚÑÐÏîÄ¿Ôõô°ì£¿ +5 ¼òµ¥»¯xn 2026-08-22 10/500 2026-08-23 12:38 by ¼òµ¥»¯xn
[»ù½ðÉêÇë] ¿´À´½ñÌì²»»á·Å°ñÁË£¿ +8 chengyan1220 2026-08-21 11/550 2026-08-21 17:52 by dcqxinyang
[»ù½ðÉêÇë] ʱ¼ä´ÁÓÖ±äÁË +13 wuchongjun 2026-08-20 19/950 2026-08-21 17:21 by ×Ïɼ´¼
[»ù½ðÉêÇë] ½ñÌì·Å°ñûϷÁ衃 +9 yuleib84 2026-08-19 11/550 2026-08-21 10:06 by gltch
[»ù½ðÉêÇë] »ù½ð°¡»ù½ð +4 longfie172 2026-08-20 4/200 2026-08-21 08:58 by mark mao
[»ù½ðÉêÇë] ÖØÒªÏûÏ¢£¬ÖÐÎçϵͳÔÚά»¤ +11 yuleib84 2026-08-18 12/600 2026-08-20 11:09 by xskun
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û