Statistical Process Control (SPC) Methods. Statistical process control (SPC) monitors specified quality characteristics of a product or service so as: To detect whether the process has changed in a way that will affect product quality and. To measure the current quality of products or services. Control is maintained through the use of control charts.
The underlying basis of criticism of GDP as a measure of welfare is the divergence between the critic's values and market values. The critics make an implicit assumption, or, quite possibly, a conscious presumption, that the former values are superior, if not far superior, to those of the latter.
Reducing poverty has become an international concern, yet there is no international consensus on guidelines for measuring poverty. In pure economic terms, income poverty is when a family's income fails to meet a federally established threshold that differs across countries. Typically it is measured with respect to families and not the individual, and is adjusted for the number of persons in a family.