Page 20 - Yellow Belt Six Sigma

Variation

• Variation refers to the differences or fluctuations in a process output. It is the deviation of

the actual results from the expected results, and it can be caused by many factors such as

the process inputs, equipment, environment, and human factors. Reducing variation is a

critical aspect of Six Sigma as it helps to improve the process performance and reduce

defects.

• To give an example of variation in a payroll process, let's consider a scenario where the

payroll clerk manually inputs employee hours worked into the payroll system. If the clerk

makes an error in the data entry, such as inputting 8 hours instead of 80 hours, this would

result in a significant variation in the process output. This variation could result in an

underpayment or overpayment of wages, which could impact employee morale and

satisfaction.