Six Sigma Experimental Design for Design for Six Sigma DFSS Unit 2 - page 34 of 44

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Statistical Design of Experiments

Statistical Design of Experiments

Fractional Factorial:

Fractional Factorial:

Main effects are confounded

Main effects are confounded

with 4-way interactions, and 2-

with 4-way interactions, and 2-

way interactions are

way interactions are

confounded with 3-way

confounded with 3-way

Fractional Factorial:

Fractional Factorial:

Main effects are confounded

Main effects are confounded

with 2-way interactions, and 2-

with 2-way interactions, and 2-

way interactions are

way interactions are

confounded with each other.

confounded with each other.

Fractional Factorial:

Fractional Factorial:

Main effects are confounded

Main effects are confounded

with 3-way interactions, and 2-

with 3-way interactions, and 2-

way interactions are

way interactions are

confounded with each other.

confounded with each other.