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15.3 DESIGN OF EXPERIMENTS
ؕؓWHAT? combinations of individual parameters for process control are varied, and their effect on the output quality are measured. From this we determine the sensitivity of the process to each parameter.
WHY? Because randomly varying individual parameters takes too long.
e.g. A One-Factor-At-A-Time-Experiment
The example shows how the number of samples grows quickly.
A better approach is designed experiments
e.g. DESIGNED EXPERIMENT for springs in last section
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