Glossary

The plural of datum; the measurement of an attribute, the volume of gas or the type of rubber. This does not necessarily mean a single measurement: it may be the result of averaging several repeated measurements and these could be quantitative or qualitative.

A variable that changes in response to changes to the independent variable in an investigation.

To plan and evaluate the construction of a product or process, including an investigation.

Systems that handle digital data, including hardware and software, for specific purposes.

Quantitative data consisting of a number of separate values where intermediate values are not permissible.