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Home Bivariate Data Calibration Calibration  
See also: multivariate calibration, regression  
Calibration
When performing an experiment, the parameters measured immediately are often not the parameters the experimenter is interested in. Someone may be interested, for example, in the concentration of a substance while measuring absorbances at certain wavelengths. In order to find the relationship between the actually measured data (i.e. the absorbances) and the property of interest (i.e. the concentration), one has to set up a calibration, i.e. a functional relationship between the measured data and the parameters of interest.
The calibration of an instrument is only possible if one knows which type of model to apply. Start the following interactive example to see several aspects of models and calibration. In general, one should ensure that the number of calibration points exceeds the number of parameters to be determined. A rule of thumb states that one should use at least three times as many calibration points as parameters. This means that for a simple linear univariate calibration curve, you should use 6 calibration points (a line is determined by two parameters).


Home Bivariate Data Calibration Calibration 
Last Update: 20121008