QUESTION:I Am An Aspiring Business Analytics Professional And Would Like To Gain Knowledge On The Statistical Concepts Covered In Lean Six Sigma Green Belt Certification. I Aim To Be Certified On Six Sigma Concepts And Gain Competency In Process Development Along With Honing My Numerical Abilities. Is This Approach Correct?
This is a great question. Green Belt Certification requires that you build your “problem solving muscle” and part of that is understanding some basic statistical concepts. As you’re most likely aware, Lean Six Sigma is based on the DMAIC model and although there is one “Measure” phase, there is data collected and analyzed at each phase to some degree. The data analysis is paired with process analysis in order to get to the root causes of process problems. Working with number is not the only focus but it’s important.
Green Belt Training
Below is a list of basic data concepts that are part of the Green Belt Training:
- Value Stream Mapping data
- Cycle Time: Process Time, Wait Time, Lead Time
- Work in Process,
- % Complete and Accurate
- Changeover Time
- Takt Time (measure of customer demand)
- Continuous (Variable) Data vs Discrete (Attribute) Data
- Checksheets, Frequency Plots
- Basic Sampling concepts
- Basic Measurement Systems Analysis concepts
- Baseline Measurements:
- Final Yield %
- First Pass Yield %
- Rolled Throughput Yield %
- Data Analysis Charts and Graphs
- Pareto Charts
- Run Charts
- Control Charts (I & MR & P Charts)
- Box Plots
- Scatter Plots
- Measures of Center, Spread and Correlation
- Mean, Median, Mode
- Range & Standard Deviation
- Correlation Coefficients, R-Values
Black Belt Training
The Black Belt Training builds on the base of statistical knowledge established in the Green Belt Training along with detailed instructions on how to setup the data for and use statistical software such as Minitab and SigmaXL. The advanced statistical topics include:
- Population parameters vs sampling statistics
- Strategies and Calculations
- P-value – use in statistical tests
- Normality – Anderson Darling Test
- Measurements Systems Analysis (Gage R&R)
- Tests for both Continuous & Discrete Data
- How to setup, run and analyze measurement testing
- Process Capability, Cpk, Cpu, Cpl
- Hypothesis Testing
- One Proportion, Two Proportion, Chi-Square
- Test for Two Variances, Bartlett’s, One-Sample T, Two-Sample T, One-Way ANOVA
- Levene’s, One-Sample Sign, Mann-Whitney, Mood’s Median
- Regression, Multiple Regression
- Design of Experiments (DOE)
- One Factor at a Time (OFAT)
- DOE – Full Factorial
- DOE – Fractional Factorial
- Control Charts
- I & MR, X-Bar & R, X-Bar & S
- P Chart, nP Chart, C Chart, U Chart
You can choose the level of instruction that is right and most useful to you. I hope that was helpful!
QUESTION:I’m Working In An Aftermarket Automotive Parts Shop. We Supply Parts To Mechanics And Garages. The Garages Have Taken To Only Ordering The Parts When The Car Is In The Shop Even Though They May be Aware Of What It Needs A Few Days In Advance. How Can I Use Lean Six Sigma To Streamline My Business And Influence The Garages To Consider Lean, Too?
Thanks for your question! Some of my answers here might seem counter-intuitive, but as you may know, Lean Six Sigma often is counter-intuitive! So I’m going to recommend that you try to turn the garages’ ordering behavior into a competitive advantage rather than trying to change it. Here’s why…
First, let’s examine the reason why the garages may be ordering “just in time” (which is actually a Lean concept!). A Lean Six Sigma approach would suggest that you actually interview some of those garages and get some Voice of the Customer (VOC) feedback; the key principle is to learn why the customers want what they want, and then try to meet their needs as comprehensively as possible.
As you talk with the garages, you’ll probably discover that they have some good business reasons for their ordering behavior. For example, when they first examine a car, they may identify the parts that they need at that time, but they also may need the owner of the car to approve the proposed repair work before they can proceed. Or they may find that some owners approve the services and then fail to follow-through. So if the owner declines some of the services or changes his/her mind, the garage could get stuck with a part that they no longer need. In contrast, by ordering just-in-time the garage may actually be reducing its costs of carrying inventory and obsolescence. So perhaps they’re using Lean principles efficiently for themselves, even though that’s not so efficient for you!
Presuming that you do that VOC interviewing and hear some kind of answers similar to the examples above, we’d recommend that you implement some solutions that more efficiently support those customers’ ordering preferences, including:
- Get really good at quick delivery. If the customers realize that your company can get them the parts very quickly after their order, they may prefer your parts over competitors’ offerings, even if you’re a little more expensive.
- Consider partnering with a larger delivery company to enable that fast delivery. For example, Amazon is now promising 2-hour delivery of 25,000 SKUs in metro areas. They have developed a network of small independent delivery teams that you could leverage by partnering with them. Their economy of scale might actually make your deliveries both faster and cheaper.
- Perhaps keep some consigned inventory at larger garages, so that each garage doesn’t feel as exposed to the risks of carrying inventory. You would continue to own the parts until they are installed in a car, and you could replace each part in the garages’ consignment inventory immediately after it is consumed (Lean calls that “Supermarket Kanban”). Consignment causes other challenges, however (e.g., the need to check/count the parts occasionally, the risk of loss, and the need to move parts between locations), so you would probably have to approach this potential solution carefully. Lean Six Sigma would suggest a data-based approach to deciding which parts move quickly enough to justify keeping them on-site at larger garages.
Some combination of all of these solutions could help, but the most important thing is to understand the customer and win by trying to give them what they need rather than trying to change what they want!
Hope that helps.
QUESTION:Is There A Project Requirement For Green Belt Training Or Black Belt Training?
Our Green Belt Training & Certification requires completion of training and an exam only. There is no project required because we walk you through a cycle time reduction project step-by-step. On the other hand, the Black Belt Training & Certification requires a live project. You can learn more about the Black Belt Course and the requirements here.
QUESTION:With A Green Belt Or Black Belt In Lean Six Sigma, Where Could I Work? Can I Get Involved In The Capital Market, Currency, Or Banking Industry?
The use of Lean Six Sigma from organization to organization varies among all industries and sectors. Financial Services is no exception. There are companies that have it fully deployed and incorporated into their culture, companies that are just starting to understand its value, and companies that have not yet begun its deployment. The key in every job search, of course, is to understand the culture and needs of the organizations to whom you apply and emphasize those skills and experiences in your application.
Having said that, companies everywhere value problem solvers. One of the single most important outcomes of a Lean Six Sigma “Belt” is the ability to effectively solve problems and satisfy customers. So, make sure to use the knowledge from those Lean Six Sigma courses to solve organization problems. Then, document the measurable results and highlight those in your resume. If it is unclear if the potential employer values or understand Lean Six Sigma, avoid the Lean Six Sigma jargon and simply describe the situation and the results you achieved. Set yourself up as a problem solver.
Last, always list that you have achieved the certification. It never hurts!
QUESTION:Can I Use Lean Six Sigma In The Automotive Industry? I Work At A Car Dealership As A Sales General Manager.
Lean Six Sigma has been used at Ford, BMW, Toyota, Porsche, and Tesla. That’s just to name a few. The use of Lean Six Sigma in automobile manufacturing and sales is not uncommon. Both automotive manufacturers dealerships can benefit from Lean Six Sigma. Here are some examples:
- Manufacturers can produce more vehicles with higher quality (and lower recalls)
- Dealerships can increase sales and speed up servicing vehicles by removing Waste such as Motion and Inventory
You can learn more about applying Lean Six Sigma to the car dealership by reading Success Stories from the automotive industry.
QUESTION:I Have My Green Belt With Another Training Provider But I Want To Become A Certified Black Belt With GoLeanSixSigma.com. Where Do I Register?
We do not entirely accept a Lean Six Sigma Green Belt from another company or provider. If you have completed your Green Belt elsewhere, you will still need to pass our Green Belt Certification Exam only. This exam is 125 multiple choice questions and is $299. You have 3 attempts to pass the exam. Please contact us to register for the Green Belt Certification exam.
QUESTION:I Don’t Have My Green Belt But I Would Like To Obtain My Black Belt. Can I Register For The Black Belt Anyway?
Unfortunately, no. The Green Belt Training & Certification is a required prerequisite for the Black Belt Training & Certification. You can register here for Green Belt Training & Certification here and save $50 if you register for both courses at once.
QUESTION:Once I Complete My Certification, Will I Get A Hard Copy Of My Certificate In The Mail?
Once you complete your Certification, a soft copy will be available and downloadable from your learner dashboard in the Learning Management System. If you are interested in a printed certificate, we can print and mail one for you. It is $35 if you’re living in the United States and $40 if you are outside the United States. Please contact us to place a certificate order.
QUESTION:If I Take One Of The Certification Tests And I Only Pass One Section, Do I Have To Take The Entire Test Over Again Or Just The Section(s) I Failed?
When taking any of our Training and Certification courses, we allow unlimited and immediate retakes. All of our exams are broken into different modules so you will only need to retake and pass the modules you fail. You do not need to take the entire test, all modules, over again.
QUESTION:For The Black Belt Training, I See A Project Submittal Is Required. Do You Supply A Mock Project Or Group Project To Work? What If I Cannot Get On A Black Belt Project At My Day Job? How Does This Work?
We do supply an example of a project submittal in the Black Belt Training. The project example is from our Bahama Bistro setting used throughout the course. You will also have a project template that can help guide you with project content.
Although work-related projects are the most ideal, the DMAIC process can be applied with personal use, but it will still require the rigor associated with Black Belt level projects. All projects will go through an approval process by a Master Black Belt.