Quality Control Flashcards Preview

GCSE Statistics (AQA) > Quality Control > Flashcards

Flashcards in Quality Control Deck (13)
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1
Q

What does µ mean?

A

Mean

2
Q

What does σ mean?

A

Standard deviation

3
Q

Warning limit =

A

µ ± 2σ

4
Q

Action limit =

A

µ ± 3σ

5
Q

What needs to happen when you reach the action limit?

A

Machine reset

6
Q

A machine reset should occur when you reach the ______ limit

A

action

7
Q

Control chart

A

Shows with horizontal lines where action and warning limits are placed

8
Q

What does the e symbol next to weights of items mean?

A

Estimated value - not exactly but within

9
Q

All weights marked on packaging may have a small margin of __________

A

inaccuracy

10
Q

Which line on this graph represents the upper action limit?

A

The first one

11
Q

Which line on this graph represents the upper warning limit?

A

The second one

12
Q

Which line on this graph represents the lower warning limit?

A

The third one

13
Q

Which line on this graph represents the lower action limit?

A

The fourth one