Boxplot - IQ

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library(dplyr) # Data inlezen data <- read.csv2("http://bcs.whfreeman.com/WebPub/Statistics/shared_resources/EESEE/BrainSize/Data_Files/BRAINSZE.TXT", sep="\t") data <- data %>% mutate(across(where(is.character), ~na_if(., "."))) data <- as.data.frame(data) data$Weight <- as.numeric(data$Weight)*0.45359237 data$Height <- as.numeric(data$Height)*2.54 colnames(data) <- c("geslacht", "FSIQ", "VIQ", "PIQ", "massa", "lengte", "MRI") # Beantwoord hieronder de vragen
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