Match the terms with their definitions.



quantitative data


qualitative data


observation


control

1.
A variation of the experiment in which the independent variable is not changed. It is used as a tool for comparison.

2.
Data that represents quantity; numeric data.

3.
Data that represents qualities or characteristics that can't be expressed by a number.

4.
The act of noting or perceiving objects or events using one or more of the five senses.