Create a histogram for employee satisfaction and last
evaluation
Histogram for employee satisfaction

Take away: Most employees are satisfied (satisfaction level) is
above 0.5 to 0.9.
Histogram for last evaluation

Take away: Employees are last evaluated more than 0.5.
Create a bar plot for the average satisfaction of employees by the
variable that indicates whether they left of stayed at the company.
Take away: Employees that stayed are 50% Satisfied, than the
employees who left.