Latin square experiment on mangolds
Latin square experiment on mangolds. Used by R. A. Fisher.
data("fisher.latin")A data frame with 25 observations on the following 4 variables.
trttreatment factor, 5 levels
yieldyield
rowrow
colcolumn
Yields are root weights. Data originally collected by Mercer and Hall as part of a uniformity trial.
This data is the same as the data from columns 1-5, rows 16-20, of the mercer.mangold.uniformity data in this package.
Unsurprisingly, there are no significant treatment differences.
Mercer, WB and Hall, AD, 1911. The experimental error of field trials The Journal of Agricultural Science, 4, 107-132. Table 1. http::/doi.org/10.1017/S002185960000160X
R. A. Fisher. Statistical Methods for Research Workers.
library(agridat) data(fisher.latin) dat <- fisher.latin # Standard latin-square analysis m1 <- lm(yield ~ trt + factor(row) + factor(col), data=dat) anova(m1)
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