Experimental Design and Graphing

Front

What is the null hypothesis?

Back

A statement of no change, no effect, or no difference.

Front

What is the alternative hypothesis?

Back

A statement that we are trying to find evidence to support. Or, a statement of change, effect, or difference.

Front

What type of data involves numbers obtained by counting or measuring?

Back

Quantitative data.

Front

What type of data involves descriptions that cannot be counted or measured?

Back

Qualitative data.

Front

What is a dependent variable?

Back

The measurable factor in an experiment that is affected by the independent variable.

Front

What is an independent variable?

Back

The factor that is manipulated or changed in an experiment.

Front

What is a control in an experiment?

Back

The standard to which comparisons are made in an experiment.

Front

What is the purpose of experimental design?

Back

To establish a cause-and-effect relationship by manipulating variables.

Front

What is a graph?

Back

A visual representation of data that shows relationships between variables.

Front

What is the x-axis in a graph?

Back

The horizontal axis that typically represents the independent variable.