The Primary Difference Between a Laboratory Test and a Field

question 76

Multiple Choice

The primary difference between a laboratory test and a field test to measure advertising effectiveness is that in a field test, a researcher:

• A)is unable to isolate causes of viewers' evaluations.
• B)has the ability to achieve greater internal validity.
• C)has control of all independent variables.
• D)can eliminate bias.
• E)can create an illusion of reality.

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Definitions:

Roundness

A geometric tolerance that limits the amount by which the surface of a part can deviate from a perfect circle.

Flatness

A geometric tolerance that specifies the maximum allowable deviation of a surface from being perfectly flat.

Geometric Tolerance

The maximum permissible deviation in shape and location for a geometric element.

Characteristic Symbol

A symbol used in engineering drawings to represent the type of geometric characteristic that is being controlled by a geometric tolerance.