Statistical Principles in the Supervision of Technical Performance in the Color Television Network of the CBC

The paper discusses the method used by the CBC to a) ascertain that the quality of long-line transmissions is maintained at the required high level, and b) assist in the control of short-term deviations of transmission performance. It details the statistical approach employed in evaluating performance from data collected by regular sampling of key parameter values. The subjects of confidence levels and of user and supplier risks when evaluating performance are also discussed.