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.
Gross Domestic Product(GDP) Economic growth is measured in terms of an increase in the size of a nation's economy. A broad measure of an economy's size is its output.The most widely-used measure of economic output is the Gross Domestic Product (abbreviated GDP).GDP generally is defined as the market value of the goods and services produced by a country.DP versus GNP. GDP measures the output of goods and services within the borders of the country. Gross National Product (GNP) measures the output of a nation's factors of production, regardless of whether the factors are located within the country's borders.