Yield and quality control

Which of the seven QC tools is a pre-prepared table of items to check that makes it easy to record and tally inspection results and defect occurrences?

  1. AScatter diagram
  2. BControl chart
  3. CCheck sheet
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Answer: C. Check sheet

A check sheet is a table with inspection items, defect types and so on written in advance, filled in with marks or counts. It prevents omissions and makes it easy to tally which defects occur how often.

  • A. A scatter diagram shows the correlation between two data sets.
  • B. A control chart monitors process stability over time.
  • C. Correct. It is a table that simplifies recording and tallying.
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More Yield and quality control questions

  1. Which is the general explanation of the difference between a product's "quality" and its "reliability"?
  2. What is the approach called that emphasizes, when a problem occurs, going to the actual place, looking at the actual thing and confirming the actual situation?
  3. Which technique varies several process conditions (temperature, time, gas flow and so on) simultaneously and systematically to efficiently determine each factor's effect with few experiments?
  4. What is the system called that monitors equipment sensor data (temperature, pressure, power and so on) during processing, detects unusual states and flags abnormalities early?
  5. Which metric evaluates equipment productivity by multiplying the fraction of time running, the performance (speed) and the good-product rate?