7.3.3 Scientific Variables

Front

What is an independent variable?

Back

The independent variable is the factor that is changed or controlled in a scientific experiment to test its effects on the dependent variable.

Front

What is a dependent variable?

Back

The dependent variable is the factor that is measured or observed in an experiment, which is affected by changes in the independent variable.

Front

What is a control group?

Back

The control group is the group in an experiment that does not receive the treatment or intervention and is used as a benchmark to measure how the other tested subjects do.

Front

What is an experimental group?

Back

The experimental group is the group in an experiment that receives the treatment or intervention being tested.

Front

How do you identify the independent variable in a graph?

Back

The independent variable is typically plotted on the x-axis and is the variable that is manipulated.

Front

How do you identify the dependent variable in a graph?

Back

The dependent variable is typically plotted on the y-axis and is the variable that is measured.

Front

What is the purpose of a hypothesis in an experiment?

Back

A hypothesis is a testable prediction about the relationship between the independent and dependent variables.

Front

What is the significance of having a control group in an experiment?

Back

A control group allows for a comparison to determine the effect of the independent variable on the dependent variable.

Front

What is a variable in scientific research?

Back

A variable is any factor, trait, or condition that can exist in differing amounts or types.

Front

What is the difference between qualitative and quantitative variables?

Back

Qualitative variables are descriptive and categorical, while quantitative variables are numerical and can be measured.