Tag: green-belt

Quizzes (5) Questions (124)

Questions Related to green-belt

Multiple choice six-sigma green-belt

Which one of the following is not true

  1. Control limits are given by customer

  2. Control limits are calculated from the data

  3. Control limits change when there is a significant change in the process

  4. Control limits represent the voice of the process
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Control limits are calculated statistically from the process data (the 'voice of the process'). Specification limits, on the other hand, are provided by the customer (the 'voice of the customer'). Therefore, the statement that control limits are given by the customer is false.

Multiple choice six-sigma green-belt

Which one of the following is TRUE?

  1. Continuous data gives more understanding of the process

  2. Discrete data gives more understanding of the process

  3. Neither is good to understand a process

  4. Discrete data is always repeatable
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Continuous data can take any value within a range and provides more granular information about process variation and performance compared to discrete data, which is limited to distinct, separate values. This granularity allows for more sophisticated statistical analysis and deeper process insights.

Multiple choice six-sigma green-belt

Which one of the following is TRUE?

  1. Smaller the variation, less the chances of defect occurrence

  2. Smaller the mean, smaller will be the Process Sigma

  3. Smaller the standard deviation, larger will be the process variation

  4. Smaller the mean, smaller will be the variation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Lower process variation means outputs are more consistent and closer to the target, reducing the likelihood of defects. Option B is incorrect because Process Sigma depends on variation (standard deviation), not the mean. Option C is wrong because smaller standard deviation means less variation, not more. Option D is incorrect because mean and variation are independent measures.

Multiple choice six-sigma green-belt

ZLT =

  1. Zst + 1.5

  2. Zst - 1.5

  3. Zst

  4. 6 Sigma
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

ZLT (Long-Term Z) accounts for the 1.5 sigma shift that occurs over time due to process drift and variation. The formula ZLT = Zst - 1.5 adjusts the short-term capability (Zst) to reflect realistic long-term performance. This shift is a fundamental concept in Six Sigma methodology.