an independent variable is a. directly changed by the experimenter. b. manipulated by changes to the…
an independent variable is a. directly changed by the experimenter. b. manipulated by changes to the dependent variable. c. a variable that is kept constant. d. a variable that is used as a control. please select the best answer from the choices provided
Answer
Brief Explanations:
An independent variable is the variable that an experimenter directly manipulates or changes in an experiment to observe its effect on the dependent variable. Options b - d are incorrect as they mis - describe the nature of the independent variable.
Answer:
A. directly changed by the experimenter