Question

Question #31134

Answer 1

variable

Explanation:

In order to be accurate in using the scientific method, the scientist should only change one variable.

Answer 2

variable

Explanation:

In a controlled experiment the independent variable is the variable that is manipulated to see how it will affect the dependent variable. The dependent variable is the variable that is measured or observed.

Scientists generally prefer to change only one independent variable at a time. Doing this allows the scientist to infer how the independent variable affects the dependent variable.