Historical
ISO 7870-4:2011
Control charts - Part 4: Cumulative sum charts
ISO 7870-4:2011 provides statistical procedures for setting up cumulative sum (cusum) schemes for process and quality control using variables (measured) and attribute data. It describes general-purpose methods of decision-making using cumulative sum (cusum) techniques for monitoring, control and retrospective analysis.
International Organization for Standardization [iso]