8
Statistical Design of Experiments
Statistical Design of Experiments
Main Effect Levels
Main Effect Levels
Level
Level
--
--
a given setting or amount of an Main Effect
a given setting or amount of an Main Effect
–
–
Set a Main Effect at two or more levels to determine if a
Set a Main Effect at two or more levels to determine if a
Response Variable improves at a given level
Response Variable improves at a given level
From the grass example:
From the grass example:
Type of Grass Seed
Type of Grass Seed
-
-
Level 1 = Red Fescue
Level 1 = Red Fescue
-
-
Level 2 = Perennial
Level 2 = Perennial
Rye
Rye
Amount of Fertilizer
Amount of Fertilizer
-
-
Level 1 = 2 bags per
Level 1 = 2 bags per
week
week
-
-
Level 2 = 1 bag per week
Level 2 = 1 bag per week
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