Which of the following statements about the independent variable are correct? (select all that apply)

Question

Scientists adjust the dependent variable to see its impact in the independent variable.

The independent variable is mentioned in the hypothesis.

A hypothesis predicts a relationship between the independent and dependent variable.

The independent variable is held constant during an experiment.

The independent variable is manipulated by the scientist.

Answer 1

The correct statements about the independent variable are:

1. The independent variable is mentioned in the hypothesis. - This is correct because a hypothesis typically includes the independent variable as part of the statement predicting how it will affect the dependent variable.

2. A hypothesis predicts a relationship between the independent and dependent variable. - This is also correct, as a hypothesis generally outlines the expected relationship or effect of the independent variable on the dependent variable.

3. The independent variable is manipulated by the scientist. - This is correct. In an experiment, the independent variable is the factor that the scientist changes to observe its effects on the dependent variable.

The following statements are incorrect:

1. Scientists adjust the dependent variable to see its impact in the independent variable. - This is incorrect because the dependent variable is what is measured in response to changes in the independent variable, not the other way around.

2. The independent variable is held constant during an experiment. - This is incorrect. The independent variable is the one that is deliberately changed or manipulated in an experiment, whereas controlled variables are held constant to minimize their effects on the results.