Proportional stratified sampling
If you are interested in subgroups within the population, then you may need to carefully control the counts of each subgroup within the population. Proportional stratified sampling results in subgroup sizes within the sample that are representative of the subgroup sizes within the population. It is equivalent to performing a simple random sample on each subgroup.
attrition_pop is available; dplyr is loaded.
Cet exercice fait partie du cours
Sampling in R
Exercice interactif pratique
Essayez cet exercice en complétant cet exemple de code.
education_counts_pop <- attrition_pop %>%
# Count the employees by Education level, sorting by n
___ %>%
# Add a percent column
___
# See the results
education_counts_pop