oats(MASS)
oats()所属R语言包:MASS
Data from an Oats Field Trial
从燕麦田间试验数据
译者:生物统计家园网 机器人LoveR
描述----------Description----------
The yield of oats from a split-plot field trial using three varieties and four levels of manurial treatment. The experiment was laid out in 6 blocks of 3 main plots, each split into 4 sub-plots. The varieties were applied to the main plots and the manurial treatments to the sub-plots.
使用三个品种,四个层次manurial治疗分裂图领域的试验燕麦的产量。实验奠定了在3个主要图,每个分割成4个子图6块。品种主要图子图manurial的治疗。
用法----------Usage----------
oats
格式----------Format----------
This data frame contains the following columns:
这个数据框包含下列资料:
Blocks, levels I, II, III, IV, V and VI.
块,我的水平,第二,第三,第四,第五和第六。
Varieties, 3 levels.
品种,3个级别。
Nitrogen (manurial) treatment, levels 0.0cwt, 0.2cwt, 0.4cwt and 0.6cwt, showing the application in cwt/acre.
的氮(manurial)治疗水平0.0cwt,0.2cwt,0.4cwt和0.6cwt,显示中英担/英亩的应用。
Yields in 1/4lbs per sub-plot, each of area 1/80 acre.
在每个子积1/4lbs,每个面积的1/80英亩的产量。
源----------Source----------
Yates, F. (1935) Complex experiments, Journal of the Royal Statistical Society Suppl. 2, 181–247.
耶茨,F.(1935)复杂的实验,皇家统计学会增刊杂志。 2,181-247。
Also given in Yates, F. (1970) Experimental design: Selected papers of Frank Yates, C.B.E, F.R.S. London: Griffin.
也给出了耶茨,F.(1970)实验设计:弗兰克·耶茨,CBE,FRS会入选论文伦敦:格里芬。
参考文献----------References----------
Modern Applied Statistics with S. Fourth edition. Springer.
举例----------Examples----------
oats$Nf <- ordered(oats$N, levels = sort(levels(oats$N)))
oats.aov <- aov(Y ~ Nf*V + Error(B/V), data = oats, qr = TRUE)
summary(oats.aov)
summary(oats.aov, split = list(Nf=list(L=1, Dev=2:3)))
par(mfrow = c(1,2), pty = "s")
plot(fitted(oats.aov[[4]]), studres(oats.aov[[4]]))
abline(h = 0, lty = 2)
oats.pr <- proj(oats.aov)
qqnorm(oats.pr[[4]][,"Residuals"], ylab = "Stratum 4 residuals")
qqline(oats.pr[[4]][,"Residuals"])
par(mfrow = c(1,1), pty = "m")
oats.aov2 <- aov(Y ~ N + V + Error(B/V), data = oats, qr = TRUE)
model.tables(oats.aov2, type = "means", se = TRUE)
转载请注明:出自 生物统计家园网(http://www.biostatistic.net)。
注:
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