A controlled test of a hypothesis, in which the researcher manipulates one variable in order to discover its effect on another variable, is called a(n):
A) correlational study.
B) experiment.
C) survey.
D) single-blind study.

Question

Quizplus · Accepted Answer

An experiment involves manipulating one variable (independent variable) to see its effect on another variable (dependent variable). Correlational studies do not involve manipulation of variables, surveys do not involve manipulation of variables, and single-blind studies involve only one group being unaware of the experimental conditions.

A Controlled Test of a Hypothesis, in Which the Researcher