##
## Welch Two Sample t-test
##
## data: data[[variable]] by data$left
## t = 46.636, df = 5167, p-value < 2.2e-16
## alternative hypothesis: true difference in means between group 0 and group 1 is not equal to 0
## 95 percent confidence interval:
## 0.2171815 0.2362417
## sample estimates:
## mean in group 0 mean in group 1
## 0.6668096 0.4400980
##
##
## 2.2 Technical Interpretation:
## The p-value is very small (p < 0 ), indicating a significant difference in mean satisfaction_level between employees who left and those who stayed.
##
## 2.3 Non-Technical Interpretation:
## Employees who left the company tend to have different satisfaction_level compared to those who stayed.
##
## Welch Two Sample t-test
##
## data: data[[variable]] by data$left
## t = -0.72534, df = 5154.9, p-value = 0.4683
## alternative hypothesis: true difference in means between group 0 and group 1 is not equal to 0
## 95 percent confidence interval:
## -0.009772224 0.004493874
## sample estimates:
## mean in group 0 mean in group 1
## 0.7154734 0.7181126
##
##
## 2.2 Technical Interpretation:
## The p-value is not small (p = 0.4683 ), indicating no significant difference in mean last_evaluation between employees who left and those who stayed.
##
## 2.3 Non-Technical Interpretation:
## There is no meaningful difference in last_evaluation between employees who left and those who stayed.
##
## Welch Two Sample t-test
##
## data: data[[variable]] by data$left
## t = -7.5323, df = 4875.1, p-value = 5.907e-14
## alternative hypothesis: true difference in means between group 0 and group 1 is not equal to 0
## 95 percent confidence interval:
## -10.534631 -6.183384
## sample estimates:
## mean in group 0 mean in group 1
## 199.0602 207.4192
##
##
## 2.2 Technical Interpretation:
## The p-value is very small (p < 0 ), indicating a significant difference in mean average_montly_hours between employees who left and those who stayed.
##
## 2.3 Non-Technical Interpretation:
## Employees who left the company tend to have different average_montly_hours compared to those who stayed.
##
## Welch Two Sample t-test
##
## data: data[[variable]] by data$left
## t = -22.631, df = 9625.6, p-value < 2.2e-16
## alternative hypothesis: true difference in means between group 0 and group 1 is not equal to 0
## 95 percent confidence interval:
## -0.5394767 -0.4534706
## sample estimates:
## mean in group 0 mean in group 1
## 3.380032 3.876505
##
##
## 2.2 Technical Interpretation:
## The p-value is very small (p < 0 ), indicating a significant difference in mean time_spend_company between employees who left and those who stayed.
##
## 2.3 Non-Technical Interpretation:
## Employees who left the company tend to have different time_spend_company compared to those who stayed.