Summary statistics on different kinds of sample
Now you have three types of sample (simple, stratified, cluster), you can compare point estimates from each sample to the population parameter. That is, you can calculate the same summary statistic on each sample and see how it compares to the summary statistic for the population.
Here, we'll look at how satisfaction with the company affects whether or not the employee leaves the company. That is, you'll calculate the proportion of employees who left the company (they have an Attrition value of "Yes"), for each value of RelationshipSatisfaction.
attrition_pop, attrition_srs, attrition_strat, and attrition_clust are available; dplyr is loaded.
Este exercício faz parte do curso
Sampling in R
Exercício interativo prático
Experimente este exercício completando este código de exemplo.
# Use the whole population dataset
mean_attrition_pop <- ___ %>%
# Group by relationship satisfaction level
___ %>%
# Calculate the proportion of employee attrition
___
# See the result
mean_attrition_pop