What term describes a characteristic or value that does not change and has only one value in a study?

What term describes a characteristic or value that does not change and has only one value in a study?

• A. Constant
• B. Hypothesis
• C. Independent Variable (IV)
• D. Dependent Variable (DV)

Answer: (A)

A constant is a value that stays the same for every participant and every trial in a study. Keeping certain factors constant helps ensure that any observed differences in outcomes are due to what you’re intentionally testing, rather than other influences. For example, if you’re examining how study duration affects test scores, you might keep the room temperature, time of day, and the test version constant. Those fixed values aren’t changed during the experiment, so they can’t confound the results. In contrast, a hypothesis is a proposed statement about a relationship between variables that you test; the independent variable is what you deliberately change to see its effect; and the dependent variable is what you measure. These ideas revolve around change and measurement, whereas a constant represents a value that does not change.

A constant is a value that stays the same for every participant and every trial in a study. Keeping certain factors constant helps ensure that any observed differences in outcomes are due to what you’re intentionally testing, rather than other influences. For example, if you’re examining how study duration affects test scores, you might keep the room temperature, time of day, and the test version constant. Those fixed values aren’t changed during the experiment, so they can’t confound the results.

In contrast, a hypothesis is a proposed statement about a relationship between variables that you test; the independent variable is what you deliberately change to see its effect; and the dependent variable is what you measure. These ideas revolve around change and measurement, whereas a constant represents a value that does not change.