1.3 Step 2 of DOE Method

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Only five computers are tested from a lab of 100 computers. If the computer is considered a factor in the experiment, computer factor should be considered as

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blocking factor

Random factor

Fixed factor

Either random or fixed depending on the experimental situation

Clear selection

An experimenter wants to test the effect of the daytime and nighttime, the time factor should be considered as

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Fixed factor

Either random or fixed depending on the experimental situation

Random factor

blocking factor

Clear selection

Randomization principle of DOE primarily ensures

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Power

Validity

Accuracy

Precision

Clear selection

Experimental units are defined by

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Randomly selected experimental units

The study subject/object in which measurements are taken (data is collected)

Randomly selected samples

The study subject/object in which treatment combinations are applied

Clear selection

Independent variables are known by so many names in DOE. Following are some common names for the independent variables, EXCEPT FOR

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Explanatory variable

Response variable

Factor

Predictor variable

Clear selection

Replication is defined by

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Collect the data on repeatedly on the experimental units

None

Application of the same treatment combination on more than one experimental unit

Both

Clear selection

The levels of a variable are defined by

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Settings or conditions of the independent variable

Settings or conditions of the dependent variable

Treatment combinations of the dependent variable

Treatment combinations of the independent variable

Clear selection

Random factor is defined by

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status of its response variable

randomization of its experimental units

status of its treatment combination

status of its level

Clear selection

Block in the design of experiment is defined by

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A place in which experimental units are randomly assigned

A set of homogenous experimental conditions

All

A place in which treatment combinations are randomly applied

Clear selection

Blocking is used to control the

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Experimental factors

Nuisance factors

Blocking factors

Uncontrolled factors

Clear selection

Dependent variable is primarily known as

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Predictor variable

Response variable

Explanatory variable

Factor

Clear selection

Blocking technique increases the

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All

Accuracy

Validity

Precision

Clear selection

Replications will allow for

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Estimation of the experimental systematic error

Both

None

Estimation of the experimental random error

Clear selection

Observation units are defined by

10 points

The study subject/object in which measurements are taken (data is collected)

The study subject/object in which treatment combinations are applied

Randomly selected experimental units

Randomly selected samples

Clear selection

Blocking principle of DOE reduces

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Experimental error

Observational error

Treatment error

Design error

Clear selection

Randomization accounts for

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Systematic variations

Uncontrolled extraneous variations

None

Both

Clear selection

Fixed factor is defined by

10 points

status of its treatment combination

status of its response variable

randomization of its experimental units

status of its level

Clear selection

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