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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.

This exercise is part of the course

Sampling in R

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Hands-on interactive exercise

Have a go at this exercise by completing this sample 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
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