15 A STATISTICAL CONTROL CHART IS A GRAPHICAL WHEN PRODUCTION ON TH...
10-15 A statistical control chart is a graphical
when production on the order is started. The
aid that helps workers identify variances that
throughput time is made up of process time,
should be investigated. Upper and lower limits
inspection time, move time, and queue time.
are set on the control chart. Any variances fal-
These four elements can be classified between
ling between those limits are considered to be
value-added time (process time) and non-value-
normal. Any variances falling outside of those
limits are considered abnormal and are investi-
added time (inspection time, move time, and
queue time).
gated.