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.
The most widely-used measure of the standard of living is GDP per capita. This is a nation's Gross Domestic Product (GDP) divided by its population. The GDP is the total output of goods and services produced in a year by everyone within the country's borders.Real GDP per capita is used to take out any effects of inflation. Real GDP is a good measure of the standard of living because a country that produces a lot will be able to pay higher wages.he GDP is the total output of goods and services produced in a year by everyone within the country's borders. Real GDP per capita is used to take out any effects of inflation. Real GDP is a good measure of the standard of living because a country that produces a lot will be able to pay higher wages.