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Prijzen 2dehands auto's - Versie B
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library(dplyr)
# Data inlezen:
autosTeKoop <- read.csv(
"https://raw.githubusercontent.com/RobbeW/Data_Statistiek_R/main/bronnen/used_cars.csv",
na.strings = c(".", "NA", ""),
strip.white = TRUE,
stringsAsFactors = FALSE
)
prijzenAstonMartin <- read.csv(
"https://raw.githubusercontent.com/RobbeW/Data_Statistiek_R/main/bronnen/prices_aston_martin.csv",
na.strings = c(".", "NA", ""),
strip.white = TRUE,
stringsAsFactors = FALSE
)
# Alleen gewenste kolommen:
autosTeKoop <- autosTeKoop[c("brand","model","model_year","milage")]
# Kolommen hernoemen
names(autosTeKoop)[names(autosTeKoop)=="milage"] <- "milage_mile"
# Scores omvormen naar integers
autosTeKoop$model_year <- as.numeric(autosTeKoop$model_year)
autosTeKoop$milage_mile <- as.numeric(gsub(',', '',substr(autosTeKoop$milage_mile,1,nchar(autosTeKoop$milage_mile)-3)))
prijzenAstonMartin$new_price <- as.numeric(prijzenAstonMartin$new_price)
# Beantwoord hieronder de vragen
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