New_airquality2 <-replace(airquality, TRUE, lapply(airquality, NA2mean))ĭim(new_airquality2) # 153 6 head(new_airquality2) # Ozone Solar.R Wind Temp Month DayĪlternatively, bagged trees can also be used to impute. NA2mean <- function(x) replace(x, is.na(x), mean(x, na.rm = TRUE)) # 6 28 NA 14.9 66 5 6 new_airquality1 <- na.omit(airquality)ĭim(new_airquality1) # 111 6 head(new_airquality1) # Ozone Solar.R Wind Temp Month Day library(base)ĭim(airquality) # 153 6 head(airquality) # Ozone Solar.R Wind Temp Month Day Load dataset airquality( New York Air Quality Measurements): Daily air quality measurements in New York, May to September 1973. # Levels: setosa versicolor virginica table(iris$Species) # # virginica virginica virginica virginica virginica virginica # versicolor versicolor versicolor versicolor virginica virginica # versicolor versicolor versicolor versicolor versicolor versicolor # setosa setosa versicolor versicolor versicolor versicolor # setosa setosa setosa setosa setosa setosa # "Species" factor(iris$Species) # setosa setosa setosa setosa setosa setosa rm(list=ls())ĭim(iris) # 150 5 names(iris) # "Sepal.Length" "Sepal.Width" "Petal.Length" "Petal.Width" The species are Iris setosa, versicolor, and virginica. Load dataset ‘iris’( Edgar Anderson’s Iris Data): This famous (Fisher’s or Anderson’s) iris data set gives the measurements in centimeters of the variables sepal length and width and petal length and width, respectively, for 50 flowers from each of 3 species of iris.
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