- Motivation
- The term experiment is defined as the systematic procedure carried out under controlled conditions in order to discover an unknown effect, to test or establish a hypothesis, or to illustrate a known effect.
- When analyzing a process, experiments are often used to evaluate:
- Which process inputs have a significant impact on the process output.
- What the target level of those inputs should be to achive a desired result (output)
- Experiments can be designed in many different ways to collect this information.
- Experiments Design Guidelines
- Uncontrollable factors that include variation under normal operating conditions are referred to as “noise factors”.
- These Factors, such as multiple machines, multiple shifts, raw materials, humidity, … can be built into the experiment so that their variation doesn’t get concentrated into the unexplained, or experiment error.
- A key strength of Designed Experiments is the ability to determine factors and settings that minimize the effect of the uncontrollable factors.