Experimental Design and Graphing

Front

What is a dependent variable?

Back

The dependent variable is the variable that is measured in an experiment. It is affected by changes in the independent variable.

Front

What is an independent variable?

Back

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

Front

What type of graph is used to compare independent variables side by side when the dependent variables are numeric?

Back

Bar graphs are used to compare independent variables side by side when the dependent variables are numeric.

Front

How can the validity of an experiment be increased?

Back

The validity of an experiment can be increased by repeating the experiment several times.

Front

What is an observation in scientific terms?

Back

An observation is a statement based on what one sees, hears, or experiences, such as 'The zombie has three yellow teeth'.

Front

What is a hypothesis?

Back

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

Front

What is the purpose of a control group in an experiment?

Back

The control group serves as a baseline to compare the effects of the independent variable.

Front

What is the difference between qualitative and quantitative data?

Back

Qualitative data describes characteristics or qualities, while quantitative data involves numerical measurements.

Front

What is a scatter plot used for?

Back

A scatter plot is used to show the relationship between two quantitative variables.

Front

What is the significance of a sample size in an experiment?

Back

A larger sample size can lead to more reliable and valid results, reducing the impact of outliers.