Statistical Design of Experiments

Statistical Design of Experiments

Statistical Design of Experiments

Statistical Design of Experiments

Statistical Inference/Hypothesis

Statistical Inference/Hypothesis

Testing

Testing

Hypothesis Testing:

Hypothesis Testing:

Status quo is always best

Status quo is always

best

until

until

proven otherwise -

proven otherwise -

through

through

experimentation.

experimentation.

Use Hypothesis testing with

Use Hypothesis testing with

Design of Experiments to

Design of Experiments to

determine if a significant

determine if a significant

difference exists between the

difference exists between the

levels of each input factor.

levels of each input factor.

The Null Hypothesis for any DOE

The Null Hypothesis for any DOE

input factor will be:

input factor will be:

•

•

The factor has no effect on the response

The factor has no effect on the response

variable

variable

•

•

Typically, interested in the mean response

Typically, interested in the mean response

at each level

at each level

of the input factor

of the input factor

The Null Hypothesis refers to

The Null Hypothesis refers to

any Hypothesis which is to be

any Hypothesis which is to be

tested (H

tested (H

0

0

).

).

•

•

Provides a basis for a decision to be

Provides a basis for a decision to be

made about what is tested

made about what is tested

•

•

Will be tested and either rejected or

Will be tested and either rejected or

not rejected

not rejected