Quality assurance and control charts (AQA GCSE Statistics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is the purpose of quality control?
What is the purpose of quality control?
Ensure products meet standards
What does a quality control chart plot?
What does a quality control chart plot?
Sample means over time
What does the symbol represent?
What does the symbol represent?
Target mean
What percentage of sample means fall within warning limits?
What percentage of sample means fall within warning limits?
95%
What action is taken if a sample mean exceeds action limits?
What action is taken if a sample mean exceeds action limits?
Stop and reset
What does measure in quality control?
What does measure in quality control?
Standard deviation
What should be done if a sample mean is between limits?
What should be done if a sample mean is between limits?
Test again
How often should samples be taken?
How often should samples be taken?
Randomly at intervals
What is the typical probability of a sample mean exceeding limits due to random variation?
What is the typical probability of a sample mean exceeding limits due to random variation?
5% chance of exceeding limits
What is the first action if a sample mean is within warning limits?
What is the first action if a sample mean is within warning limits?
No action needed