Which type of variable is "Parent's Income" in the student's project examining whether a parent's income impacts a child's choice of college?

A dependent variable is the outcome that researchers measure to see if it is affected by the independent variable. In this scenario, the child's choice of college represents the dependent variable, not the parent's income. Thus, labeling parent's income as a dependent variable is incorrect.

Measurement variables refer to variables that can be quantified and assessed on a continuous scale, but they do not specifically indicate the role of the variable within an experimental framework. Parent's income can be measured, but this term does not categorize it correctly in the context of the study's design.

Control variables are factors that researchers keep constant to ensure that any observed effects on the dependent variable are due solely to the independent variable. However, parent's income is not controlled; instead, it is the variable whose effects are being investigated, distinguishing it from control variables.