Statistical Design of Experiments
Statistical Design of Experiments
Statistical Design of Experiments
Statistical Design of Experiments
In the previous example, The machine
In the previous example, The machine
factor had 3 levels instead of 2 levels
factor had 3 levels instead of 2 levels
In conclusion:
In conclusion:
The F statistic was very
The F statistic was very
significant implying that not all
significant implying that not all
of the factor level means were
of the factor level means were
the same.
the same.
One -Way ANOVA
One -Way ANOVA
Based on the analysis, what
Based on the analysis, what
statements could you make in
statements could you make in
regards to the factor level means?
regards to the factor level means?
You don’t know if they all differ
You don’t know if they all differ
from one another
from one another
You don’t know if two are the same
You don’t know if two are the same
and the third differs
and the third differs
You don’t know which one is best
You don’t know which one is best
Common Technique -
Common Technique -
Use Main
Use Main
Effects plots
Effects plots
Plots the mean response at each
Plots the mean response at each
level of the factor under study
level of the factor under study
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