Pre-test Variables

Front

What is an independent variable?

Back

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

Front

How many independent variables can you have in an experiment?

Back

You can have one independent variable in a controlled experiment.

Front

What is a dependent variable?

Back

A 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 constant variable?

Back

A constant variable is a factor that remains unchanged throughout an experiment to ensure that the test results are valid.

Front

What is a hypothesis?

Back

A hypothesis is a testable prediction about the relationship between two or more variables.

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two quantitative variables, with data points plotted on the x and y axes.

Front

What does it mean if data points in a scatter plot show no clear linear pattern?

Back

It indicates a weak or no correlation between the variables being plotted.

Front

In an experiment, if the temperature is changed, what type of variable is temperature?

Back

Temperature is the independent variable.

Front

In a study about tire treads and braking distance, what is the independent variable?

Back

The independent variable is the tire treads.

Front

What is the purpose of controlling variables in an experiment?

Back

Controlling variables ensures that the experiment tests only the effect of the independent variable on the dependent variable.