Don’t like the data? Throw it out!

One of the first tasks our Black Belt students are asked to do when completing a project is collect data over time and create control charts for the primary output metric.  The purpose of these control charts is to establish baseline performance, and to determine if the process is stable. One of my students is […] read more

Issues with Data Collection – the Flint MI Water Crisis

The city of Flint, Michigan changed its water source from the Detroit water system to the Flint River in April, 2014 in order to save money.  Residents soon began to complain about the water’s color, taste and odor, and to report rashes and concerns about bacteria.  The Flint city government proclaimed at that time that […] read more

On July 30th, 2016, posted in: Six Sigma by Tags: ,

Issues in Data Collection

There are a number of issues that we must consider when collecting and using data for analysis purposes.  One of those issues is the Hawthorne Effect, also referred to as the observer effect.   This is a phenomenon where individuals change their behavior because they know they are being observed or watched.    The term was coined […] read more

On December 8th, 2014, posted in: Six Sigma by Tags: ,