mean±s.e.m.和mean±sd存在区别，主要体现在其代表的意义和计算方式上。mean±s.e.m.代表平均值加减标准误。其中，“mean”指的是平均值，反映了数据的集中趋势；“s.e.m.”即“standard error of the mean”，即平均数的标准误，反映了...
Mean ±SEM”or “Mean (SD)”
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c. More than three standard deviations above the mean? According to the empirical rule, if the data form a bell-shape curve (normal distribution), approximately what percent of the observations will be contained within ± 2 standard de...
"ND","SD", and "WD" stand for "North Delta", "South Delta", and "West Delta", respectively. The number associated with each box plot indicates the size of the sample (i.e., number of SPEI projections with statistically significant trend) applied to produce that box. Red crosses ...
SD2 SEIKO/精工 SEMIC/华晶 SEMICO/华润矽科 SEP/长虹 SIBAS/西霸士 SILICONLABS SKYWORKS/思佳讯 SMC SMSC28 SONIX/松翰 ST(意法) STA STA/思大 STM SUNLORD/顺络 SUNPLUS SUP SUSUMU/进工业 Silicon/矽睿 TAKAMISAWA/高见泽 TAMURA/田村 TE TECHWCLL TEJIATE TEKNOVUS TI(德州仪器) TOPRO TR TRINAMI TRIQ...