Opposite of a constant is

Opposite of a constant is

• A. A variable
• B. A control
• C. A sample
• D. A measurement

Answer: (A)

In research, a constant stays the same across conditions, while a variable can change. The idea here is that something that can take on different values or states across observations is a variable, which is why it’s the opposite of a constant. This distinction matters because variables are what you observe, manipulate, or track to understand relationships and effects. A control is a fixed condition used for comparison, not the opposite of constant. A sample is a subset of the population, and a measurement is a data value collected. So the term that best captures the opposite of a constant is variable.

In research, a constant stays the same across conditions, while a variable can change. The idea here is that something that can take on different values or states across observations is a variable, which is why it’s the opposite of a constant. This distinction matters because variables are what you observe, manipulate, or track to understand relationships and effects. A control is a fixed condition used for comparison, not the opposite of constant. A sample is a subset of the population, and a measurement is a data value collected. So the term that best captures the opposite of a constant is variable.