##
## Pearson's product-moment correlation
##
## data: hr$satisfaction_level and hr$last_evaluation
## t = 12.933, df = 14997, p-value < 2.2e-16
## alternative hypothesis: true correlation is not equal to 0
## 95 percent confidence interval:
## 0.08916727 0.12082195
## sample estimates:
## cor
## 0.1050212The p-value is less than alpha (0.01) therefore we reject the null hypothesis and conclude that there is a small and positive correlation between satisfaction and last evaluation
As last evaluation increases, satisfaction level increases slightly
##
## Pearson's product-moment correlation
##
## data: hr$number_project and hr$average_montly_hours
## t = 56.219, df = 14997, p-value < 2.2e-16
## alternative hypothesis: true correlation is not equal to 0
## 95 percent confidence interval:
## 0.4039037 0.4303411
## sample estimates:
## cor
## 0.4172106the p-value is less than alpha (0.01) therefore we reject the null hypothesis and conclude that there is a moderate and positive correlation between number of projects and average monthly hours
As the number of projects increases, the average monthly hours increase moderately
##
## Pearson's product-moment correlation
##
## data: hr$time_spend_company and hr$average_montly_hours
## t = 15.774, df = 14997, p-value < 2.2e-16
## alternative hypothesis: true correlation is not equal to 0
## 95 percent confidence interval:
## 0.1119801 0.1434654
## sample estimates:
## cor
## 0.1277549the p-value is less than alpha (0.01) therefore we reject the null hypothesis and conclude that there is a small and positive correlation between time spent with the company and average monthly hours
As the time spent with the company increases, the average monthly hours worked increases slightly
##
## Pearson's product-moment correlation
##
## data: hr$number_project and hr$satisfaction_level
## t = -17.69, df = 14997, p-value < 2.2e-16
## alternative hypothesis: true correlation is not equal to 0
## 95 percent confidence interval:
## -0.1586105 -0.1272570
## sample estimates:
## cor
## -0.1429696the p-value is less than alpha (0.01) therefore we reject the null hypothesis and conclude that there is a small and negative correlation between number of projects and satisfaction level
As the number of projects increases, the satisfaction level decreases slightly