The Data Flows in a Logical Data Flow Diagram (DFD)

question 110

Multiple Choice

The data flows in a logical data flow diagram (DFD) show:

• A) how the data are transmitted
• B) where the data are transmitted
• C) the nature of the data being transmitted
• D) who transmits the data

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Definitions:

Researcher's Manipulation

The deliberate alteration of variables by a researcher in an experiment to determine cause and effect relationships.

Independent Variable

A variable that is manipulated or changed in an experiment to determine its effect on a dependent variable.

Dependent Variable

In an experimental setting, the variable that is being tested and measured, which is expected to change as a result of manipulations in the independent variable.

Independent Variable

In experimental and research settings, the variable that is manipulated or changed to observe its effects on the dependent variable.