Data discrepancy is a situation whereby different data collection methods about the same indicator for the same period of time produce statistically different data points. By statistically different, it is meant that although the sampling errors are indicated for the different data points, the data still remains different. It worth noting that differences in the […]

A Model is a representation of the actual observable phenomenon. In the absence of an observable phenomenon, a framework is developed to represent it in order to proceed with the desirable inferences. In aeronautics, for example, costs are substantially reduced when one uses a model to design and test an aircraft or its spare parts before the […]