Assignment 7

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

Technical interpretation

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

Non-Technical Interpretation

The amount of monthly hours will not effect employee satisfaction level

The Graph

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 positive correlation between satisfcation level and last evaluation

Non-Technical Interpretation

As last evaluation increases, employee satisfaction level increases slightly

The Graph

3. Last Evaluation vs. Average Monthly Hours

## 
##  Pearson's product-moment correlation
## 
## data:  hr$last_evaluation and hr$average_montly_hours
## t = 44.237, df = 14997, p-value < 2.2e-16
## alternative hypothesis: true correlation is not equal to 0
## 95 percent confidence interval:
##  0.3255078 0.3538218
## sample estimates:
##       cor 
## 0.3397418

Technical Interpretation

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

Non-Technical Interpretation

As last evaluation increases, average monthly hours increases slightly

The Graph

4. Time Spent in Company vs. Average Monthly Hours

## 
##  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 
## 0.1277549

Technical Interpretation

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

Non-Technical Interpretation

As time spent at the company increases, average monthly hours increases slightly

The Graph