standard errors and confidence interval 2020-03-25

The standard error of the sample mean is the standard deviation in sample means across samples , i.e. a measure of the variability (or uncerta ...

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the Pearson correlation coefficient (r) between X and Y 2020-03-25

If the Pearson correlation coefficient (r) between X and Y is 0, does this mean there is no relationship between X and Y ? NOOO!!! A correlatio ...

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2020年2-4月XTBG培训项目因新冠疫情延后举办通知 2020-03-23

鉴于新冠疫情形式依然严峻，版纳植物园2-4月的培训项目将依次顺延，具体举办日期待定，欢迎大家预报名。 原定2 月 17 － 22 日（ 6 天），西双版纳热带 ...

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[转载]XTBG 2019 R语言入门培训班 (8月24－25),还有名额 2019-08-07

http://www.xtbgeet.com/?p=36562 课程安排        课程将会从软件安装开始逐步深入并自带电脑同步练习。即使您没有任何基础也不 ...

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求朋友们告诉哪里有这10种哺乳动物的头骨标本！ 2019-08-07

求朋友们告诉哪里有这10种哺乳动物的头骨标本！ Dear friend, please tell me if y know where I can find skull speciemens of the the 10 mammals! 告 ...

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Must read paper in SEED SCIENCE （4，5） 2019-06-13

Analysis of germination data from agricultural experiments https://doi.org/10.1016/j.eja.2012.10.003 Dose-Response Analysis Using R ...

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