About this document
Control Charts in Quality Control by Michael Angelo Catubig is a document available to read on EtoBox.
Dr. Walter A. Shewhart invented control charts in 1920 while working for Bell Labs to reduce failures and repairs in their telephony transmission systems. Control charts are graphs used to study how a process changes over time by comparing current data to historical control limits to determine if a process is in a state of statistical control or is affected by special causes of variation. To create a control chart, data is collected and plotted on the chart, subgroup averages and ranges are calculated, cont
- Author
- Michael Angelo Catubig
- Language
- EN