Telemetry is the use of telecommunications to transmit live data. Readings can easily be taken in remite or fast-moving locations and the results obtained immediately. In motor races, sensors on the cars transmit live data to the engineers about many things such as tyre temperatures , fuel, speed and gear canges.
The software that processes recorded data can display it in an easy-to-understand way. This is visualisation. The data can be used instantly to plot charts and create tables.