A Histogram is a bar chart showing the frequency of an outcome. They can reflect the voice of the process & will certainly be on your exam.
A Binomial Distribution describes the probability of an event that only has 2 possible outcomes. For Example, Heads or tails.
The Central Limit Theorem states that the distribution of the sample means approaches normal regardless of the shape of the parent population.
A Critical to Quality Tree (CTQ Tree) is a tool that turns customer needs into specific, measurable, and actionable performance requirements.
William Edwards Deming was an American management consultant and educator. He popularized the PDCA cycle first developed by Walter Shewhart.