Quality Control Flashcards
What does µ mean?
Mean
What does σ mean?
Standard deviation
Warning limit =
µ ± 2σ
Action limit =
µ ± 3σ
What needs to happen when you reach the action limit?
Machine reset
A machine reset should occur when you reach the ______ limit
action
Control chart
Shows with horizontal lines where action and warning limits are placed
What does the e symbol next to weights of items mean?
Estimated value - not exactly but within
All weights marked on packaging may have a small margin of __________
inaccuracy
Which line on this graph represents the upper action limit?
The first one
Which line on this graph represents the upper warning limit?
The second one
Which line on this graph represents the lower warning limit?
The third one
Which line on this graph represents the lower action limit?
The fourth one
