summary
dplyr
library(dplyr)
base::reshape
library(reshape2)
reshape2
library(tidyr)
duplicated
unique
is.na
na.omit
complete.cases
base::merge
merge
join
sqldf
NA
Create another column Weight_g by multiplying Weight_kg column with 1000.
Weight_g
Weight_kg
Create a column with centered Age data as c_Age by subtracting mean(Age) from the Age_yr column.
Age
c_Age
mean(Age)
Age_yr