1. Satisfaction Level vs Average Monthly Hours

## 
##  Pearson's product-moment correlation
## 
## data:  hr$satisfaction_level and hr$average_montly_hours
## t = -2.4556, df = 14997, p-value = 0.01408
## alternative hypothesis: true correlation is not equal to 0
## 95 percent confidence interval:
##  -0.036040356 -0.004045605
## sample estimates:
##         cor 
## -0.02004811

Techinal Interpretation

The p-value is greater than alpha (0.01) therefore we retain the Ho and conclude that there is no correlation between satisfaction and avg monthly hours

Non-Technical Interpretation

The amount of hours has no effect on employee satisfaction

2. Satisfaction level vs Last Evaluation

## 
##  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 
## 0.1050212

Technical Interpretation

The p-value is less than alpha (0.01) therefore we reject the Ho and conclude that there is a small and positive correlation between satisfaction and last evaluation

Non-Technical Interpretation

As last evaluation increases, satisfaction level increases, slightly

3. Satisfaction level VS time spend company

## 
##  Pearson's product-moment correlation
## 
## data:  hr$satisfaction_level and hr$time_spend_company
## t = -12.416, df = 14997, p-value < 2.2e-16
## alternative hypothesis: true correlation is not equal to 0
## 95 percent confidence interval:
##  -0.11668153 -0.08499948
## sample estimates:
##        cor 
## -0.1008661

Technical Interpretation

The p-value is less than alpha (0.01) therefore we reject the Ho and conclude that there is a small and positive correlation between satisfaction and time spent at the company

Non-Technical Interpretation

As time spent at company increases, satisfaction level increases, slightly

4. Satisfaction level VS promotion last 5 years

## 
##  Pearson's product-moment correlation
## 
## data:  hr$satisfaction_level and hr$promotion_last_5years
## t = 3.1367, df = 14997, p-value = 0.001712
## alternative hypothesis: true correlation is not equal to 0
## 95 percent confidence interval:
##  0.009605315 0.041591949
## sample estimates:
##        cor 
## 0.02560519

Technical Interpretation

The p-value is less than alpha (0.01) therefore we reject the Ho and conclude that there is a small and positive correlation between satisfaction and time spent at the company

Non-Technical Interpretation

As promotion increases, satisfaction level increases, slightly