Statistical Process Control Charts （统计过程控制图）.pdf

Deciding which Control Chart to Use Statistical Process Control Charts In contrast to the run chart there are numerous ways to construct control charts. The decision of which to use hinges on the type of data you have collected. ‘A one page book’ There are basically 2 types of data - ‘Count what is countable, measure what is measurable. What is not measurable, make measurable. Discrete or Attributes data Galileo Galilei Continuous or Variables data Counts of event that can be aggregated This one page book covers some of the basic theory regarding the use of Control Charts This is data that can take on differing into discrete categories - acceptable for quality improvement. It builds on the topics summarised in the MCA ‘Run Charts’ one values on a continuous scale, over vs. non acceptable, infected vs. not page book and is best used after those concepts have been practiced and are time—e.g. length of stay, total number of discharges, attendances etc infected, late vs. on time, Attendance understood. Run charts are convenient and are easy to construct and understand but