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lead time

Violin plots for services & kanban

16 March 2018 by Robert Falkowitz 1 Comment

Concept of a violin plot

I have frequently remarked that “traditional” analysis of service events and the plotting of data is highly misleading. This is due to a distribution of data that is neither symmetric nor normal. A useful data plotting tool for asymmetric, non normal data distributions is the violin plot. This article joins my series of articles concerning […]

Filed Under: Graphical management tools, Kanban, Service Management Tagged With: asymmetric distribution, box plot, histogram, interquartile range, lead time, median, normal distribution, probability density, reliability, tools, violin plot

Service processes versus manufacturing processes

17 March 2016 by Robert Falkowitz 8 Comments

Manufacturing and service processes—similar but not the same As more and more organizations use quantitative approaches to managing their services and service processes, so do management frameworks such as Six Sigma or Lean-Six Sigma become more and more used. However, the quality methods in such approaches were first developed to support manufacturing. They concern how […]

Filed Under: processes Tagged With: control limits, Cost of Delay, last responsible moment, lead time, lean, lean-six sigma, opportunity cost, process metrics

Stopping the clock vs. waiting time

17 May 2014 by Robert Falkowitz Leave a Comment

Stopping the clock is a pernicious practice There is a tradition among certain service providers to “stop the clock” when measuring process cycle time. They consider that any process activity under the responsibility of someone other than the service provider should not count against the agreed service level. There are two main cases: when the […]

Filed Under: Kanban Tagged With: flow efficiency, kanban, lead time, lean, productivity, stop the clock, waiting time

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