Systematic sampling
One sampling method that avoids randomness is called systematic sampling. Here, you pick rows from the population at regular intervals.
For example, if the population dataset had one thousand rows and you wanted a sample size of five, you'd pick rows 200, 400, 600, 800, and 1000.
attrition_pop is available; dplyr and tibble are loaded.
Это упражнение является частью курса
Sampling in R
Интерактивное практическое упражнение
Попробуйте выполнить это упражнение, дополнив этот пример кода.
# Set the sample size to 200
sample_size <- ___
# Get the population size from attrition_pop
pop_size <- ___
# Calculate the interval
interval <- ___