School of Six Sigma

In this sec­tion we’re intro­duced to both lean and six sig­ma while also learn­ing how they can be used togeth­er in harmony.

Now that we’ve cov­ered some impor­tant foun­da­tion­al work it’s time to learn how to iden­ti­fy a good project. This step is extreme­ly impor­tant since a poor­ly scoped project has lit­tle hope of success.

The abil­i­ty to under­stand how mate­r­i­al and process­es flow, while also iden­ti­fy­ing the ​“inputs” or ​“Xs” to a process, is at the heart of the DMA­IC method­ol­o­gy. So, in this sec­tion we’ll learn about dif­fer­ent types of process maps while also learn­ing how to take the infor­ma­tion learned from process map­ping into addi­tion­al tools like the C&E Matrix and FMEA in order to nar­row the lists of inputs down to the ​“crit­i­cal few.” To be sure, many prob­lems can solved dur­ing this phase of a project so it’s real­ly time to dig in!

OK, now that we have a bet­ter under­stand­ing of our process­es… it’s time to learn how to tru­ly under­stand the data we’re pre­sent­ed with. So, in the next 5 videos we’re going to intro­duce you to Minitab as well as intro­duce you to what this thing called ​“Sta­tis­tics” is all about.

Have you ever won­dered why real­tors rarely ever speak about the ​“aver­age” home price… instead they typ­i­cal­ly refer to the medi­an home price? If so, you’re in luck since we’re about to explain the dif­fer­ent types of descrip­tive statistics.

The abil­i­ty to graph data is supreme­ly impor­tant. But with so many graphs to choose from how do we choose the cor­rect one? This series of videos answers that ques­tion for you!

Hav­ing a sol­id under­stand­ing of the sci­en­tif­ic method and how to study a small sam­ple of data in order to make deci­sions about an entire pop­u­la­tion is what usu­al­ly sep­a­rates excel­lent Con­tin­u­ous Improve­ment Prac­ti­tion­ers from aver­age ones. In the next series of videos we real­ly dig into top­ics such as hypoth­e­sis test­ing and nor­mal­i­ty. Final­ly, you will nev­er need to use ALL of these tools in a sin­gle project… but it’s still impor­tant you under­stand the tool allow­ing you to use it when the time is right.

SPC, or Sta­tis­ti­cal Process Con­trol, is anoth­er foun­da­tion­al tool for all Con­tin­u­ous Improve­ment Prac­ti­tion­ers. In this series of videos we’ll learn all about SPC as well as the many dif­fer­ent types of Con­trol Charts at our disposal.

Have you ever won­dered what ​“Six Sig­ma” real­ly means from a sta­tis­ti­cal per­spec­tive? If so, you’re about to learn. Addi­tion­al­ly, you’re also going to learn the key rela­tion­ship between the Voice of the Cus­tomer and the Voice of Process as well as how to mea­sure this rela­tion­ship with Process Capa­bil­i­ty Analysis.

ANO­VA, which stands for Analy­sis of Vari­ance, is a fun­da­men­tal sta­tis­ti­cal con­cept that is used in things such as Mea­sure­ment Sys­tems Analy­sis, Regres­sion, and DOE. In this sec­tion, we’ll learn what ANO­VA is as well as how we can lever­age it in order to run experiments.

When applic­a­ble, being able to deter­mine how ​“cor­re­lat­ed” vari­ables are can be extreme­ly enlight­en­ing as it can allow us to build pre­dic­tive mod­els. But, as you will learn, there is a key dif­fer­ence between cor­re­la­tion and cau­sa­tion so set­tle in and pre­pare to have some fun with regression!

Can you trust the data that you’re ana­lyz­ing? If you’re not sure… you def­i­nite­ly need to per­form a mea­sure­ment sys­tem analy­sis. Now, to be sure, we’ll typ­i­cal­ly per­form an MSA ear­ly in our project but since there are so many advanced sta­tis­ti­cal con­cepts, like ANO­VA, used in an MSA we had to make you wait a bit before shar­ing it with you. The good news is the wait is over!

Design of Exper­i­ments, or DOE, is one of the most pow­er­ful tools avail­able to Lean & Six Sig­ma prac­ti­tion­ers. Sad­ly, many peo­ple sim­ply don’t under­stand what an authen­tic DOE is or, in some cas­es, some prac­ti­tion­ers mis­tak­en­ly believe their one fac­tor at a time exper­i­ment is in fact a DOE when, real­ly, it isn’t.

Once process­es are improved it’s crit­i­cal we keep them from back­slid­ing. As such, the abil­i­ty to lever­age tools like Con­trol Plans, Poka Yoke, and SPC are must use tools.