Construct an \(\bar{X}\) and R chart or a p chart, calculate the control limits, plot the points and comment on whether the process is under control. A short quality-control or Six Sigma theory part may also be included.
UNIT5
IOE Probability & Statistics Workbook
Statistical Quality Control
Use control charts to study process variation, identify unusual changes and make a clear final decision.
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Syllabus Coverage
- Quality control and its importance in engineering
- Common causes and assignable causes of variation
- \(\bar{X}\) and R control charts with graph practice
- p control chart for fraction defective
- Control limits, process decisions and interpretation
- Six Sigma concepts, DMAIC and DPMO
Likely Question Pattern
Preparation point: do not stop after calculating the limits. Draw the chart, check every plotted point and write the final process-control conclusion clearly. View the full exam pattern ›