Statistical Design of Experiments
Statistical Design of Experiments
Statistical Design of Experiments
Statistical Design of Experiments
Modeling
Modeling
In the last practice exercise,
In the last practice exercise,
there were 3 factors:
there were 3 factors:
Temperature
Temperature
Pressure
Pressure
Catalyst
Catalyst
Temperature and Pressure are
Temperature and Pressure are
both quantitative variables
both quantitative variables
Sometimes we are interested in
Sometimes we are interested in
predicting the response for
predicting the response for
values of a factor that wasn’t
values of a factor that wasn’t
measured
measured
For example, suppose you want
For example, suppose you want
to know the yield if Temperature
to know the yield if Temperature
is 30° instead of 20° or 40°
is 30° instead of 20° or 40°
We use a technique called
We use a technique called
modeling to obtain a
modeling to obtain a
mathematical formula to make
mathematical formula to make
predictions
predictions
Then it’s simply “Plug &
Then it’s simply “Plug &
Chug”!
Chug”!
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