[MD] Heads or tails?

[Kevin Perez]

Hello Case, Ron,
 
Good things, these tolerances and variances.  They help us to communicate
and to know quality.  Not too long ago an automobile's useful life was 100,000
miles.  Today, most automobile manufacturer's deliver product that achieves
twice that.  The reason for the improvement is more repeatable and reproducible
manufacturing processes (e.g., machine tools and gauges) and the statistical
methods that enable manufacturers to translate data into meaningful information
that can then be used to monitor and control the processes, i.e., the advent of
feedback loops in manufacturing, e.g., Shewart or Deming cycle; Plan, Do,
Check, Act, Plan, Do...
 

Kevin

       
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