Which Measure Lacks Both Reliability and Validity

question 258

Multiple Choice

Which measure lacks both reliability and validity?

• A)scholastic aptitude as measured by the score on an SAT test
• B)happiness as measured by heart beats per minute
• C)intelligence as measured in terms of birth order
• D)class performance as measured by randomly picking a grade out of a hat

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Definitions:

Part

A piece or component of a larger object or system.

Undercut

Undercut is a condition in manufacturing where a part of the geometry is recessed below or behind an adjacent surface, often challenging to machine.

Symbol

A symbol is a graphical representation or sign that stands for an object, concept, or operation in technical drawings, schematics, or mathematical equations, facilitating communication.

Symmetry

A balanced and proportionate similarity between two halves of an object, often mirrored around a central axis.