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Trivia Flashcards

7 cards from real Certified Six Sigma Black Belt Exam practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. Which company is most often credited with pioneering the modern Six Sigma methodology in the 1980s?

    Answer: Motorola

    Motorola developed and pioneered Six Sigma in the mid-1980s, winning the Malcolm Baldrige National Quality Award in 1988 partly due to Six Sigma efforts.

  2. What statistical distribution is assumed when using a standard control chart for individual measurements (I-MR chart)?

    Answer: Normal distribution

    I-MR charts assume that individual measurements are approximately normally distributed for the control limits to be statistically valid.

  3. The concept of 'Jidoka' in lean manufacturing means:

    Answer: Automation with human intelligence to stop at abnormalities

    Jidoka, a pillar of the Toyota Production System, means automation with human intelligence — machines detect abnormalities and stop automatically to prevent defect propagation.

  4. Which Six Sigma tool is best suited for identifying the root cause of a problem by asking 'Why?' repeatedly?

    Answer: 5 Whys

    The 5 Whys technique iteratively asks 'Why?' five times (or more) to drill down from a symptom to its true root cause.

  5. In hypothesis testing, a Type II error occurs when:

    Answer: A false null hypothesis is not rejected

    A Type II error (beta error) occurs when the null hypothesis is false but we fail to reject it — we miss a real effect.

  6. What does 'Cp' measure in process capability analysis?

    Answer: Potential process capability assuming the process is centered

    Cp measures potential (or inherent) process capability assuming the process is perfectly centered within its specification limits, without accounting for mean shift.

  7. The Malcolm Baldrige National Quality Award was established in which year?

    Answer: 1987

    The Malcolm Baldrige National Quality Award was established by the U.S. Congress in 1987 to recognize U.S. organizations for performance excellence.