df <- data.frame(id = 1:10,
gender = c("male", "female", "male", "male", "male", "male", "male", "male", "female", "female"),
age = c(25, 32, 45, 19, 27, 56, 38, 42, 33, NA),
salary = c(50000, 60000, 75000, 45000, 55000, 90000, NA, 80000, 65000, 70000))
# Check the data structure of the example dataframe
check_data_structure(df)
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