The first training unit introduces the subject of Metrology, with a particular focus on issues related to the Quality data and information available, for which the concept of “Uncertainty” is key and never completely divisible from the very same act of measurement, but can be put under control if both directly controllable and external conditions are known and its influence properly analysed.
This last part of the first block deals with data properties (variability, precision, accuracy, repeatability, reproducibility, etc.) applied to Dimensional Metrology, as well as explaining the difference between explicit and tacit, objective and subjective knowledge, and the relationship between data, information and knowledge. More specifically applied to Coordinate Measuring Machines, and apart from these key concepts explained above, this Element collects clues about errors and uncertainties and mathematical foundations for measuring (probability, statistics, data regression).