Six Sigma Green Belt Certification Practice Exam

Which term refers to a distribution based on counted data?

1. Continuous Distribution

2. Decision Distribution

3. Discrete Distribution

4. Normal Distribution

The correct answer is: Discrete Distribution

The correct answer is indeed the term that refers to a distribution based on counted data, which is a discrete distribution. This type of distribution is applicable when dealing with data that can only take on specific values, typically whole numbers, as it represents counts of occurrences, such as the number of defects, number of satisfied customers, or any other scenario where the data cannot be subdivided into fractions. Discrete distributions are characterized by their probabilities assigned to each possible value. The binomial distribution and the Poisson distribution are both examples of discrete distributions, which are commonly used in quality management and Six Sigma processes to analyze count-based data. In contrast, a continuous distribution is used for data that can take on any value within a range, such as weight or height, and is not suitable for count-based data. Decision distribution is not a standard statistical term and does not pertain to any established distribution types. Normal distribution is a specific type of continuous distribution characterized by its bell-shaped curve, focusing on continuous data rather than counted values.