R Dataset / Package robustbase / phosphor
On this Picostat.com statistics page, you will find information about the phosphor data set which pertains to Phosphorus Content Data. The phosphor data set is found in the robustbase R package. Try to load the phosphor data set in R by issuing the following command at the console data("phosphor"). This may load the data into a variable called phosphor. If R says the phosphor data set is not found, you can try installing the package by issuing this command install.packages("robustbase") and then attempt to reload the data with library("robustbase") followed by data("phosphor"). Perhaps strangley, if R gives you no output after entering a command, it means the command succeeded. If it succeeded you can see the data by typing phosphor at the command-line which should display the entire dataset.
If you need to download R, you can go to the R project website. You can download a CSV (comma separated values) version of the phosphor R data set. The size of this file is about 217 bytes.
Phosphorus Content Data
This dataset investigates the effect from inorganic and organic Phosphorus in the soil upon the phosphorus content of the corn grown in this soil, from Prescott (1975).
A data frame with 18 observations on the following 3 variables.
P. J. Rousseeuw and A. M. Leroy (1987) Robust Regression and Outlier Detection. Wiley, p.156, table 24.
data(phosphor) plot(phosphor) summary(lm.phosphor <- lm(plant ~ ., data = phosphor)) summary(lts.phosphor <- ltsReg(plant ~ ., data = phosphor))phosphor.x <- data.matrix(phosphor[, 1:2]) cPh <- covMcd(phosphor.x) plot(cPh, "dd")
Dataset imported from https://www.r-project.org.
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