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C-Chart

What is a C-Chart? The control chart (c-chart) for defects is also called the Attribute Chart (counting the number of defects). It is used to track the number of defects within units with constant sizes. The chart can track the number of defects per unit, whether...

Full Factorial Design

Full Factorial Design Full Factorial Design allows for experiments to include at least one test in all combinations of variables and levels. It is impossible to miss interactions with this exhaustive approach since all interactions between factors are taken into...

First Pass Yield (FPY)

First Pass Yield (FPY) This is the result of dividing the number of units that go into a particular process by a certain period of time. This is a key manufacturing metric for measuring quality and production performance. This relates to the efficiency of a particular...

Attribute chart (Np Chart)

What is an NP chart? Attribute Chart (np chart) is the control chart for defects (d-chart) also known by the name of Attribute charts. The chart is used to monitor the number of defective or non-conforming items during the measurement process. It uses binary...

One factor at a time (OFAT)

What is One factor at a time (OFAT)? One factor at a time (OFAT) is an effective problem-solving technique that identifies the most critical causes of an effect. Ceteris paribus, the approach is to change only one factor. All other factors (causes) are kept...