What term describes the measurable effect, outcome, or response in which the research is interested?

• A. Hypothesis
• B. Independent Variable
• C. Observation
• D. Dependent Variable

Answer: (D)

The key idea is the measurable outcome that changes in response to what the researcher alters. This is the dependent variable—the result you measure to see how it responds when you vary something else in the experiment. For example, in a study about how different amounts of water affect plant growth, you would measure plant height after a set period. The height is the dependent variable because it depends on the amount of water you gave.

In contrast, the independent variable is what you change on purpose (the water amount). An observation is simply the act of noticing or recording data, not the specific outcome being studied. A hypothesis is a predicted statement about what you expect to happen, not the measured result itself.

So, the term that describes the measurable effect, outcome, or response the research is interested in is the dependent variable.