ex0817(Sleuth2)
ex0817()所属R语言包:Sleuth2
Biological Pest Control
生物病虫害防治
译者:生物统计家园网 机器人LoveR
描述----------Description----------
In a study of the effectiveness of biological control of the exotic weed tansy ragwort, researchers manipulated the exposure to the ragwort flea beetle on 15 plots that had been planted with a high density of ragwort. Harvesting the plots the next season, they measured the average dry mass of ragwort remaining (grams/plant) and the flea beetle load (beetles/gram of ragwort dry mass) to see if the ragwort plants in plots with high flea beetle loads were smaller as a result of herbivory by the beetles.
外来杂草艾菊千里光属植物的生物控制的有效性在一项研究中,研究人员操纵15个图已种植了高密度的千里光属植物千里光属跳甲的曝光。收获的图下个赛季,他们测量了千里光属植物的平均干质量剩余(克/株)和跳甲负荷(甲虫/克千里光属植物的干重),看看千里光属植物的图与高跳甲负载较小作为一个结果,虫食的甲虫。
用法----------Usage----------
ex0817
格式----------Format----------
A data frame with 15 observations on the following 2 variables.
一个数据框以下2个变量的15次观测。
Loadflee beetle load (in beetles/gram of ragwort dry mass)
Load逃离甲虫负载(甲虫/克千里光属植物的干重)
Massdry mass of ragwort weed
Mass千里光属杂草干质量
源----------Source----------
Ramsey, F.L. and Schafer, D.W. (2002). The Statistical Sleuth: A Course in Methods of Data Analysis (2nd ed), Duxbury.
拉姆齐,F.L.和Schafer,D.W. (2002年)。的统计的猎犬:A课程方法的数据分析(第二版),达克斯伯里。
参考文献----------References----------
McEvoy, P. and Cox, C. (1991). Successful Biological Control of Ragwort, Senecio jacobaea, by introducing insects in Oregon, Ecological Applications 1(4): 430–442.
实例----------Examples----------
str(ex0817)
转载请注明:出自 生物统计家园网(http://www.biostatistic.net)。
注:
注1:为了方便大家学习,本文档为生物统计家园网机器人LoveR翻译而成,仅供个人R语言学习参考使用,生物统计家园保留版权。
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