Independent and Dependent Variables

What is an independent variable?

• A variable that is not relevant to the experiment.

• A variable that is determined by chance in an experiment.

• A variable that is manipulated or controlled by the researcher in an experiment.

• A variable that is measured or observed in an experiment.

What is a dependent variable?

• A dependent variable is the variable being measured or observed in an experiment or study.

• A dependent variable is the variable that is controlled by the researcher in an experiment or study.

• A dependent variable is the variable that remains constant in an experiment or study.

• A dependent variable is the variable that is manipulated in an experiment or study.

In a scientific experiment, which variable is manipulated by the researcher?

• extraneous variable

• independent variable

• control variable

• dependent variable

In a scientific experiment, which variable is measured or observed?

• dependent variable

• independent variable

• control variable

• extraneous variable

What is the purpose of an independent variable in an experiment?

• To control the experiment conditions.

• To observe its effect on the dependent variable.

• To collect data for analysis.

• To determine the sample size.

What is the purpose of a dependent variable in an experiment?

• The purpose of a dependent variable in an experiment is to control the independent variable.

• The purpose of a dependent variable in an experiment is to manipulate the independent variable.

• The purpose of a dependent variable in an experiment is to determine the cause and effect relationship between variables.

• The purpose of a dependent variable in an experiment is to measure or observe the outcome or result affected by the independent variable.

Give an example of an independent variable in a biology experiment.

• The size of the organism.

• The concentration of a chemical solution

• The pH level of the water.

• The temperature of the environment.

Give an example of a dependent variable in a physics experiment.

• The mass of the object being dropped.

• The time it takes for an object to fall to the ground.

• The height from which the object is dropped.

• The speed at which the object is dropped.

How are independent and dependent variables related in an experiment?

• The independent variable is manipulated by the researcher, while the dependent variable is measured or observed and is affected by the independent variable.

• The independent and dependent variables are unrelated in an experiment.

• The independent variable is measured or observed and is affected by the dependent variable, while the dependent variable is manipulated by the researcher.

• The dependent variable is manipulated by the researcher, while the independent variable is measured or observed and is affected by the dependent variable.

Why is it important to identify and control variables in an experiment?

• To confuse the participants

• To make the experiment more interesting

• To increase the sample size

• To determine cause and effect relationship