| ²é¿´: 19166 | »Ø¸´: 3 | |||
Shoneyľ³æ (ÖøÃûдÊÖ)
|
[ÇóÖú]
SDÓëSEMÓÐÇø±ðÂð£¿
|
|
SD: standard deviation SEM: standard error of the mean ÕâÁ½ÕßÓÐÇø±ðÂ𣿠|
» ²ÂÄãϲ»¶
ûÓÐÈκÎÏûÏ¢-ÊDz»ÊǾÍÁ¹ÁË
ÒѾÓÐ10È˻ظ´
ÈËÆø²»ÐÐÁË
ÒѾÓÐ11È˻ظ´
2026¹ú×ÔÈ»º¯ÆÀ·Ñµ½ÕË
ÒѾÓÐ22È˻ظ´
µ¼Ê¦Í²ۣºÎÒÔõô̯ÉÏÁËÕâô¸ö¼«Æ·Ñо¿Éú£¡
ÒѾÓÐ3È˻ظ´
2026ÄêµÄ¹ú¼ÒÉç¿Æ»ù½ðÏîĿͨѶÆÀÉóµÄйæÔòÓëж¯Ïò¡¢ÐÂÌôÕ½
ÒѾÓÐ7È˻ظ´
½ñÌì»ù½ð»á³ö½á¹ûÂð£¿20260819
ÒѾÓÐ18È˻ظ´
ÎÒÃæÉÏÍêµ°ÁË
ÒѾÓÐ14È˻ظ´
·¶½øÖоÙÒ»ÎĵÄÖÐÐÄ˼Ïë
ÒѾÓÐ8È˻ظ´
Ö»ÓÐÿÄêÕâÖÖʱºòÀ´¹ä¹äСľ³æ
ÒѾÓÐ27È˻ظ´
Ã÷ÌìÓ¦¸Ã¿É²éÁË£¡£¿
ÒѾÓÐ5È˻ظ´
» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:
ÄÜÇë½ÌһϽðÏàͼÏñÓëSEMͼÏñµÄ²î±ð
ÒѾÓÐ13È˻ظ´
AFMÓëSEM£¬TEMµÄÇø±ð
ÒѾÓÐ19È˻ظ´
¡¾ÇóÖú¡¿Í³¼ÆÑ§ÇóÖú£¨¹ØÓÚÏÔÖøÐÔ²îÒìµÄ×Öĸ£©
ÒѾÓÐ19È˻ظ´
¡¾ÇóÖú¡¿½é¿×²ÄÁÏ×öSEMÖÆÑùÓõ¼µç½ººÍË«Ãæ½ºµÄÇø±ð
ÒѾÓÐ6È˻ظ´
¡¾ÇóÖú¡¿TEMºÍSEMÉϵÄEDSÓÐÊ²Ã´Çø±ð
ÒѾÓÐ3È˻ظ´
¡¾ÇóÖú¡¿SEMºÍTEMµÄÐÔÄÜÓÐÄÄЩÒìͬºÍÊÊÓ÷¶Î§
ÒѾÓÐ6È˻ظ´
ÇëÖ¸½ÌSE, SEMºÍPooled SEMµÄÇø±ð
ÒѾÓÐ3È˻ظ´
¡¾½»Á÷¡¿Í¸Éäµç¾µ£¨TEM£©ºÍɨÃèµç¾µ£¨SEM£©Ó¦ÓõÄÇø±ð£¿
ÒѾÓÐ9È˻ظ´
¡¾Çë½Ì¡¿semºÍtemµÄEDS¶Ô·ÖÎöÑùÆ·µÄ³É·ÖÓÐʲô²»Í¬
ÒѾÓÐ13È˻ظ´
ºïÆÕ·ò¶û
Òø³æ (ÕýʽдÊÖ)
- Ó¦Öú: 9 (Ó×¶ùÔ°)
- ½ð±Ò: 480.8
- É¢½ð: 366
- ºì»¨: 12
- Ìû×Ó: 379
- ÔÚÏß: 19.4Сʱ
- ³æºÅ: 1683020
- ×¢²á: 2012-03-11
- ÐÔ±ð: GG
- רҵ: ÉúÎﻯѧ
¡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
¸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 ] |

2Â¥2012-06-20 18:09:28
Shoney
ľ³æ (ÖøÃûдÊÖ)
- Ó¦Öú: 33 (СѧÉú)
- ½ð±Ò: 7217.1
- É¢½ð: 138
- ºì»¨: 9
- Ìû×Ó: 1178
- ÔÚÏß: 337.6Сʱ
- ³æºÅ: 435677
- ×¢²á: 2007-08-25
- רҵ: ¹¤³ÌÈÈÎïÀíÏà¹Ø½»²æÁìÓò
3Â¥2012-06-21 08:45:11
nicknelson
ÖÁ×ðľ³æ (Ö°Òµ×÷¼Ò)
- Ó¦Öú: 7 (Ó×¶ùÔ°)
- ½ð±Ò: 34188.9
- É¢½ð: 16
- ºì»¨: 1
- Ìû×Ó: 3799
- ÔÚÏß: 589.7Сʱ
- ³æºÅ: 319500
- ×¢²á: 2007-03-08
- ÐÔ±ð: GG
- רҵ: ÉúÎïÎïÀí¡¢ÉúÎﻯѧÓë·Ö×Ó
¡¾´ð°¸¡¿Ó¦Öú»ØÌû
¡ï
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
Shoney: ½ð±Ò+1 2012-06-21 10:52:50
¸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









»Ø¸´´ËÂ¥
20