X-Bar
What is an X-Bar? In statistics, an X-bar (also written as x̄) represents the mean or average of a set of values. It is a measure of central tendency, specifically the arithmetic mean, which is calculated by adding up all the values in a dataset and then dividing the...A3 Problem Solving
What is A3 Problem Solving? A3 problem-solving is a Lean way of reporting problems and providing solutions. Toyota developed a simple method that involves documenting the problem and its current result, along with a proposed change, all on one sheet of A3...Homogeneity of Variance
What is Homogeneity of Variance? Homogeneity of variance, also known as homoscedasticity, is a statistical concept that refers to the assumption that the variance, or the spread of scores, is approximately equal across different groups or categories in a dataset. In...Supplier Request for Engineering Approval
What is Supplier Request for Engineering Approval? A Supplier Request for Engineer Approval (SREA) is a procedure used to request that a permanent change to a product or process be made. 3 Benefits to a Supplier Request For Engineering Approval. It is understandable...
