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.
Cheryl Latham for Metro Thursday 25 Apr 2013 7:28 am. GDP is a measure that shows if the economy is growing or shrinking (Picture:PRESS ASSOCIATION). Gross domestic product, or GDP, is an important economic measure because it attempts to pinpoint the countryâs economic health in just one number.It is an estimate of all the economic activity taken over the previous three months.heryl Latham for Metro Thursday 25 Apr 2013 7:28 am. GDP is a measure that shows if the economy is growing or shrinking (Picture:PRESS ASSOCIATION). Gross domestic product, or GDP, is an important economic measure because it attempts to pinpoint the countryâs economic health in just one number.