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Do you hear voices? In a business context, that’s normal. Let’s listen in to the voice of the business and hear what it has to say.

Software inspection requires thorough examination in order to be sure that it is safe for release. In order to successfully and reliably conduct such an examination, a plan is required. Overview: What is a software inspection plan? A software inspection plan is a formalized process of inspecting software for any issues. The typical steps involved […]

Strategic planning is a formal, organized, proactive and structured process used by an organization to define its vision, goals, and objectives. The process of strategic planning also includes planning for, and the allocation of the resources needed to reach the stated goals and objectives of the organization. It is the roadmap for achieving your organization’s […]

So, you’ve decided to tackle a key process improvement project. You have your problem statement and scope set up, and now you need to determine who will be assigned to the core project team. Who needs to be on the team to maximize your probability of success? There’s a term for those individuals: subject matter […]

In order to understand the world of Lean Six Sigma and the terminology that goes along with it, you need to know what subject matter is. It’s important because this is where you can start your project and determine if there are any areas for improvement or if anything needs fixing. By looking at subject […]

Standard operating sheets help keep operations running smoothly. They outline the process steps, timing, and other elements of a given operation and allow employee engagement in the process.

More often than not, it’s the variation in a process rather than the central tendency that results in defective products, causes us to not meet customer expectations, or costs real dollars. While there are others, standard deviation is the most common metric for quantifying the variation in a dataset.

When doing statistical analysis, it is impractical and often impossible to gather all the available data. That is when you would seek to sample the data to analyze it and make decisions about your process. In statistics, a sample refers to a group of individuals, objects, or events that are selected from a larger population […]

When you speak of subgrouping, it is usually in the context of constructing a control chart. Let’s explore the topic in a little more detail. Subgrouping is a technique used in control charts to group data into smaller, more manageable sets or subgroups. The purpose of subgrouping is to increase the sensitivity of the control […]

Residual, standardized residual, studentized residual — what do they mean, and how do I use them? 

A t-test is a statistical tool used to determine whether a significant difference exists between the means of two distributions or the mean of one distribution and a target value.

Do you want to know whether your process is in control or not? Statistical Process Control, or SPC, is the tool you want to learn about, so let’s get started. 

In today’s fast-paced business environment, organizations are constantly looking for ways to improve efficiency, cut costs, and optimize their operations. Lean Six Sigma is a methodology that has been widely adopted by companies in various industries to achieve these goals. One of the key concepts in Lean Six Sigma is sufficiency. Overview: what is sufficiency, […]

Once in a lifetime, someone comes along who has a profound and transformational impact on society. Dr. W. Edwards Deming was such a person and his System of Profound Knowledge has had a significant impact on the business world.

What does your process look like from 25,000 feet up in the air? Your extended process view can be described using SIPOC, or supplier, input, process, output, and customer. Let’s get in our plane and go up. 

Six Sigma has been defined in three ways: as a metric, a methodology, and a philosophy. Sigma can be defined as the standard deviation of a set of continuous data, so Six Sigma would then be six standard deviations.

No company is an island. Virtually every business process relies on different types of input, often in the form of physical supplies, that it does not generate internally. The concept of supply chain management (SCM) revolves around controlling and adapting to the way inputs flow into the process and outputs flow out of it. Overview: […]

The customer just placed a new order requesting 100 widgets by the end of the week. If we keep producing at our current rate, will our cycle time be able to provide the parts in time? What is the rate we must produce the widgets to meet their deadline? Well, that rate has a name, […]

In the spirit of continuous improvement, re-engineering is the process by which you can identify, analyze, and re-design your organization’s core business processes for the purpose of achieving improvements in critical performance measures. Reengineering, also known as business process reengineering (BPR), is a methodology that focuses on the fundamental redesign of business processes to achieve […]

The root cause is the true factor that leads to a condition or non-conformance. Let’s look at how root cause compares to symptoms, the benefits of attending to a root cause, and some common tools you can use to uncover the root cause.

Learn the benefits of standard work, including how it is used to reduce variability within processes, assists faster training timeframes, and provides a starting point for process improvement projects.

The dictionary defines a response as a reaction to something. A response variable would be defined as the reaction or effect on a dependent variable as a result of an experimental manipulation of independent variables.  Response variable When discussing Design of Experiments (DOE) and Regression, you can talk about independent variables, also known as the […]

Over one-third of projects will fail, and two-thirds will only achieve some of their goals. It is estimated that a lack of proper systems engineering is responsible for half of all total project failures. In order to help ensure that your projects do not wind up falling short, it is important to include systems engineering. […]

The shortest distance between two places is a straight line. Unfortunately, you can’t alway do that in your work environment. Let’s see how a spaghetti diagram might help visualize how things move through your workplace. 

In 1903, famed writer H.G. Wells first described the importance of mathematical analysis. Samuel Wilks, in 1951, paraphrased Wells and developed this famous quote: “Statistical thinking will one day be as necessary for efficient citizenship as the ability to read and write.” Let’s see why he said that.

It is said that a picture is worth a thousand words. You can also say a picture of your data is worth a thousand words. The stem and leaf plot is one such picture. 

You need to be SMART when writing the goals for your project charter: specific, measurable, achievable, relevant, and time-bound. Here’s how the SMART framework can help you write better goal statements.

Learn the benefits of tracking sigma level, including how it is used to understand how the current quality capabilities match with customer expectations, where future process improvement opportunities lie, and how to verify results.

In the Analyze phase of DMAIC, you will want to identify possible independent or predictor variables to help explain the relationship with your response or dependent variables. Correlation is a statistical tool to establish the strength of the relationship between your independent and dependent variables. Regression is used to predict your response variable as a […]

As competitive and market pressure increases, business strategic planning becomes ever more crucial. Using SWOT analysis, we investigate the factors that allow us to plot a path to continued growth and profitability.

So much to learn, and so little time to do it. The Six Sigma Body of Knowledge (SSBOK) is a collection of the tools and methodology of Six Sigma and serves as the base for most Six Sigma training and certifications.

Defined or assumed conditional liability before the fact – limited to overt practices. Capacity to be responsible assumes the use of adequate expertise and capability.

When someone says your data is skewed, do you get upset? Skewness can be a natural state of your data. Let’s find out more about skewness and what it means.

Repeatability is the variation that occurs when a person uses a measurement tool (gage) to measure the same part repeatedly. This article will cover what it means to measure and evaluate the repeatability of a gage. What is the measure of a person? What is the measure of a person measuring? Repeatability is one measure of […]

A graph of the points representing a collection of data, is one of the most useful techniques for gaining insight into the relationship between two variables.

The creation of a rational subgroup is the key to the proper use of control charts. Let’s try to understand what makes them rational.

Your company has just announced that its product line has a 100% total throughput rate, touting it as a great win for everyone. However, from your perspective, you see massive amounts of rework being performed, disrupting the production lines, costing additional money, and impacting on-time delivery. If only there was an easy-to-see metric that could […]

The reliability of an item is the probability that it will adequately perform its specified purpose for a specified period of time under specified environmental conditions. Dr. Lawrence M. Leemis, Department of Mathematics, College of William and Mary, from his textbook titled Reliability: Probabilistic Models and Statistical Methods.

Soft savings are benefits gained from Lean Six Sigma projects that cannot easily be assigned a dollar value. These include things like greater trust, reduced frustration, and increased job satisfaction.  

The meaning of the word “robust” can shift depending on the context. It can be used to describe an organization that’s grown to a significant size, a person with a lot of natural stamina or the hearty flavor of a gourmet soup. However, in the context of process management, robustness describes the ability of a […]

A saturated design, in the context of Design of Experiments, is a simplified experiment used for screening possible significant factors. It is designed to give you a high-level understanding of the main effect of factors, but not their interactions.

Being able to make the right decisions about your products/services can have a major impact on the future of your organization. Having an organization that can make necessary adjustments before the impact is too great is a goal of most companies. Being able to gauge sensitivity across a great number of variables can help make […]

It is usually impractical to measure everything if you are trying to collect data. That is why you will use an appropriate sampling technique. But how big a sample should you get? Using a sample size calculator will make that task quick and easy. Let’s see how. When you are required to collect data to […]

When you hear the term residual, think of linear regression. It is the error of your prediction equation and has implications for the quality of your regression analysis. 

Your design of experiments (DOE) has many variables and a tight budget. How can you balance the process information you need with the limitations of time and resources? You might try using a screening DOE.

Setting effective goals is crucial to the success of any project, and this is especially true in Six Sigma. SMARTER is a goal-setting framework that is commonly used in Six Sigma to ensure that project goals are well-defined and achievable. Overview: What is SMARTER The term SMARTER stands for Specific, Measurable, Achievable, Relevant, Time-bound, Evaluated, […]

If your eyeglasses have the correct prescription, you will have proper resolution and can see clearly and with detail. The same holds true for your Measurement System Analysis and Design of Experiments. Greater resolution means your data can help you see more information about your process.

When doing Design of Experiments (DOE), replicates become an important consideration for improving the accuracy of your experiment. Let’s learn a little more about replicates. In Design of Experiments (DOE), a replicate is a single repetition or run of an experiment, with all conditions and factors kept constant except for the treatment being studied. The […]

A scorecard in sports indicates which team is winning by monitoring an important metric such as number of runs, or baskets or touchdowns. Your business scorecard can provide valuable information on how your organization is doing. In business, a scorecard is a tool used to measure and track the performance of an organization or specific […]

Ship dates may seem arbitrary, but they can have a major impact on the financial bottom line of your organization as well as how satisfied your customers are. Choosing ship dates that are realistic and that are in sync with when your customers expect products to be delivered is a fundamental part of doing good […]