The people doing the measurements must also have their skills compared to determine if there is any bias in the individual techniques reflected in the individual results. This is the stage at which the molecular information is extracted from the measured results. Or the process can involve a much more complex response such as the gas phase composition above a burning rubber sample or a sample of shale containing shale oil. It may be necessary to find ways to remove background signals from the response of the samples to the analytical method or even background signals that are added by the measurement method. OR, the task could be to predict the complex behavior of the material in question.
Coal burns to leave ash.
IF one uses the best analysis techniques. The examples chosen in this tutorial are drawn from the armory of tools all called Factor Analysis. The goal is to help begin the development of a sense of chemical intuition as to what Factor Analysis can provide. It is important that one first understands the concept and where Factor Analytical methods can be best applied.