The only source of variability whose impact is intentional is the ______.
A) independent variable
B) dimensional quantity
C) organism
D) extraneous variable

Question

Quizplus · Accepted Answer

The independent variable is intentionally manipulated by the researcher to measure its impact on the dependent variable. All other sources of variability, including extraneous variables and the organism being studied, are not intentionally controlled by the researcher and may have unintended effects on the results.

The Only Source of Variability Whose Impact Is Intentional Is