knitr::opts_chunk$set(fig.width = 5, fig.height = 3) library(car) library(BioStat)
Input =(" Location Turbidity a 1.0 a 1.2 a 1.1 a 1.1 a 2.4 a 2.2 a 2.6 a 4.1 a 5.0 a 10.0 b 4.0 b 4.1 b 4.2 b 4.1 b 5.1 b 4.5 b 5.0 b 15.2 b 10.0 b 20.0 c 1.1 c 1.1 c 1.2 c 1.6 c 2.2 c 3.0 c 4.0 c 10.5 ") Data = read.table(textConnection(Input), header = TRUE)
gg_boxplot_plus(Turbidity ~ Location, data = Data)
ggplot(Data, aes(Turbidity)) + geom_histogram(bins = 10, color = "black", aes(y = ..density..)) + stat_normal_density(color = "red", lwd = 1)
model = lm(Turbidity ~ Location, data = Data)
Anova(model, type = "II")
x = (residuals(model)) library(rcompanion) plotNormalHistogram(x) qq_plot(residuals(model))
plot(model)
library(rcompanion) Data$Turbidity_tuk = transformTukey(Data$Turbidity, plotit = FALSE)
Turbidity = c(1.0, 1.2, 1.1, 1.1, 2.4, 2.2, 2.6, 4.1, 5.0, 10.0, 4.0, 4.1, 4.2, 4.1, 5.1, 4.5, 5.0, 15.2, 10.0, 20.0, 1.1, 1.1, 1.2, 1.6, 2.2, 3.0, 4.0, 10.5) library(rcompanion) plotNormalHistogram(Turbidity)
library(MASS) Box = boxcox(Turbidity ~ 1, # Transform Turbidity as a single vector lambda = seq(-6,6,0.1) # Try values -6 to 6 by 0.1 ) data.frame(Box)
quine
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