Category: Concepts

The Toyota Production System, was developed around the elimination of the three types of deviations that represent the inefficient allocation of resources. The three types of deviations are muda, mura, and muri. Muda deals with waste and is often defined by the 7 wastes of lean. Mura is concerned with inconsistency and variation and may […]

MTTR can refer to Mean Time to Repair as well as Mean Time to Resolution, Mean Time to Resolve, and Mean Time to Recovery. These all mean the same general thing, but on this definition page, whenever we reference MTTR, it is in regard to Mean Time to Repair. Overview: What is Mean Time to […]

Sometimes your data isn’t a normal distribution. Sometimes, the curve is taller or shorter than the normal distribution. Is that a problem? We can answer that question by learning a little bit more about kurtosis and the leptokurtic distribution.

Management by knowledge is imperative to the success of your process improvement initiatives. Discover how to harness this tactic in your Six Sigma processes to enhance performance, promote collaboration, and maximize staff potential. What is Management by Knowledge in Six Sigma? Six Sigma serves as a powerful tool to drive efficiency and customer satisfaction. With […]

Understanding mean time between failures (MTBF) is a way of expecting the unexpected. Every kind of physical tool, machine or device will eventually fail. Friction of physical parts rubbing against each other, degradation of certain materials or misalignment between different components can all contribute to system failures. That’s why every active car needs tune-ups and […]

Having a metricationist on your team opens up your organization to a wide range of possibilities. The use of metrics can mean the difference between an average company and a great one. A metricationist can help take your company to an optimal level of quality. Overview: What is a metricationist? A metricationist is a person […]

Lean manufacturing seeks to get rid of the extra fat and waste in your process while seeking to build muscle in your production processes. Let’s see how.

Making data-driven decisions is critical in today’s business environment, but can you trust your measurement system to give you meaningful data? Measurement System Analysis is the tool you need to know whether you can trust your data.

As the Chinese proverb says, “a picture is worth a thousand words.” The multi-vari chart is such a picture. In a single graph, you will be able to understand the variation of your process. Let’s learn more. 

If you are trying to predict the outcome of a dependent variable by analyzing the relationship with several independent variables, then multiple regression may be your statistical tool of choice. Let’s examine multiple regression in more detail. Multiple regression is a statistical technique that allows you to analyze the relationship between a dependent variable and […]

When a product is purchased by an end-user, it is generally sold individually. However, when the product is initially delivered to a distributor by a supplier or sold wholesale, it is usually grouped into a large quantity and sold as a lot. When your business expands, it is almost guaranteed that you will be dealing […]

Complex products and processes can often yield significant variation in output, with resultant poor customer satisfaction, especially when process inputs are not well controlled. By understanding and controlling our key process input variables, we have the perfect approach to keep output variation in check.  

Process stability is a critical need before trying to improve that process, and control charts are used to assess it. The lower control limit is one of the three fundamental lines on a control chart for identifying a lack of stability.

House of Quality? No, this is often referred to as a House of Pain because of the effort needed to complete one. Let’s see if we are just being overly pessimistic. 

In a box plot, it is easy to see the range of where 50% of your data lies. Let’s examine this a little further by describing the interquartile range. Quartiles can be defined as dividing your data into 4 parts or quarters of approximately equal size. You can define the 4 parts in terms of […]

When it comes to process capability, the more tools you have, the better. An L2 spreadsheet can help to make working with your capabilities a simpler endeavor. L2 Spreadsheet An L2 spreadsheet is just one of many spreadsheets that can help you be more knowledgeable about the ins and outs of your business. Overview: What […]

In-control is not referring to the behavior of your children. It’s about whether your process is exhibiting common or special cause variation. Let’s explore how this works.

Six Sigma is a method for process improvement that aims to minimize variation. Organizations with multiple departments such as finance, manufacturing, and sales with different definitions of a defect can use these universal metrics to identify processes that are not operating at a Six Sigma level. Overview: What is an L1 Spreadsheet? An L1 spreadsheet is […]

Have you ever had to shut down your manufacturing line because major components haven’t arrived from your supplier? Have you ever had to rent extra warehouses for your finished goods? Just-in-time (JIT) manufacturing would prevent that from happening. Let’s see how that works.

If your organization is too impatient to use a formal DMAIC approach to continuous improvement then Kaizen may be the tool for you. 

You may remember seeing or having a Jack in the Box toy when you were a child. It looked much like a box and would have a crank on its side that you could turn. It would play a little song, and suddenly the top would fly open and the head of a clown (or […]

Your business is at war with waste, defects, and inefficiencies. Let’s attack and defeat your enemy with a lightning-quick attack using overwhelming forces. In other words, a Kaizen Blitzkrieg, or Blitz for short.

What do your customers really want? You are taking a risk by blindly fulfilling your customers’ needs without understanding how they classify them. Kano analysis will allow you to properly classify those customer needs and lower your risk.

Japanese quality professional widely known for the Ishikawa diagram also known as the fishbone or cause and effect diagram. He is also known as Ishikawa, Kaoru.