how to implement spc. why we need spc?

Answer Posted / karthick

spc-statistical process control is a technique used in
quality engineering.when a product is being under
production it is subjected to this technique.here a graph
is drawn between control limits (i.e., upper control and
lower control).the product should be between the limits.if
it is greater than the upper or lesser the lower control
then the product shoule be rejected.

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