Clik here to view.
Triangle Kanban Sizing
Triangle kanban, while one of three types of signal kanban, are unique in that there is only a single kanban per part number or stock keeping unit. Accordingly, kanban sizing math has nothing to do...
View ArticleMaking the Lean Learning Community More Valuable to You
Recently, a handful of us fellow-lean bloggers had the opportunity to chat about the voice of the customer (VOC). This was not an abstract discussion about someone else’s customers. We were focused on...
View ArticleClik here to view.
Available Time for Changeovers
Available time for changeovers per period (Ta∆), also called available time for (internal) set-ups, represents the time per a given period day, shift, week, etc. during which a machine, equipment, or...
View ArticleClik here to view.
Plan Versus Actual Math
The plan versus actual chart is one of the most powerful and simple visual process performance metrics. In fact, it’s a sort of Swiss Army knife of charts in that it not only provides insight into...
View ArticleClik here to view.
Value Stream Mapping Math: Rolled throughput Yield
Value stream analysis is an effective way to identify improvement opportunities within a product or service family’s value stream, envision a leaner future state and develop an actionable value stream...
View ArticleClik here to view.
Graphs Are Math: Visual Process Performance
In the words of my friend and colleague Larry Loucka, “graphs are math.” Graphs often serve as effective visual process performance tools. Typically, these types of graphs fall into the metric...
View ArticleClik here to view.
Full Time Equivalent Math
Full time equivalent(s), commonly referred to as FTE(s), represents the number of equivalent employees working full time. One full time equivalent is equivalent to one employee working full time....
View ArticleClik here to view.
Days Inventory on Hand
Days inventory on hand, also known as a days of supply, along with inventory turns, is a measure of inventory investment. While turns may be one of the most basic measures of an organization’s...
View ArticleClik here to view.
Cpk and the Mystery of Estimated Standard Deviation [guest post]
It all started when my colleague and I noted that we had used the same data to calculate Cpk, but ended up with different results. This led us down an Alice in Wonderland-like path of Google searching,...
View ArticleClik here to view.
Pitch Interval for Same Pitch Products
Pitch interval (Ip) can be thought of in two ways: 1) as a unit of time representing the (usually) smallest common pitch shared among a range of products, services, or transactions that are being...
View Article