Standardonzekerheid

Standardonzekerheid, also known as standard uncertainty, is a fundamental concept in the field of metrology, which is the science of measurement. It is a measure of the uncertainty associated with a measurement result, expressed in the same units as the measurement itself. The term "standard" refers to the fact that this uncertainty is expressed in a standardized way, allowing for comparisons between different measurements and instruments.

Standard uncertainty is typically calculated using the law of propagation of uncertainty, which takes into account the uncertainties of the input quantities and the mathematical operations performed on them. It is expressed as a standard deviation, which is a measure of the dispersion or spread of a set of values. The smaller the standard deviation, the more precise the measurement.

Standard uncertainty is an essential component of measurement uncertainty, which is the overall uncertainty associated with a measurement result. Measurement uncertainty is expressed as an expanded uncertainty, which is the standard uncertainty multiplied by a coverage factor. The coverage factor is chosen to reflect the desired confidence level, typically 95% or 99%.

Standard uncertainty is a crucial concept in fields such as engineering, science, and quality control, where accurate and reliable measurements are essential. It helps to ensure that measurements are consistent, repeatable, and comparable, and it provides a basis for making informed decisions based on measurement results.