For Any Relation R, If, for Every Valid Instance of A

question 88

Multiple Choice

For any relation R, if, for every valid instance of A, that value of A uniquely determines the value of B:

• A) then a primary dependency exists in the relation.
• B) then A is said to be functionally dependent on B.
• C) then B is said to be functionally dependent on A.
• D) then A and B are candidate keys for the relation.
• E) None of the above is true.

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Definitions:

Factorial Design

An experimental setup that allows researchers to study the effects of two or more independent variables simultaneously on a dependent variable.

Main Effect

In statistical analysis, the direct impact of an independent variable on a dependent variable.

Interaction Effect

Occurs when the effect of one independent variable on the dependent variable differs depending on the level of another independent variable.

Scientific Inquiry

The diverse ways in which scientists study the natural world and propose explanations based on evidence gathered.