How Billing Delays Can Correlate with Call Volumes

I recently was reminded of the value of challenging long-held assumptions. I was working in a 700-seat call center, which was operated by an international mobile carrier that had been purchased and merged with a large regional carrier. Systems and processes at the call center were finally stabilizing, except for the billing process. The company…

Improving Personal Health Using Data and Six Sigma

Four times a year, I donate blood at a local blood bank and receive readings on my cholesterol, blood pressure and pulse. Although donating blood does not improve a person’s health, the regular readings of the vital signs, along with analysis and actions stemming from this data, can be significant in the fight against heart…

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Understanding Scatter Diagrams and Correlation Analysis

Six Sigma scatter diagrams and their correlation analyses often debunk management myths. Many times executives assume and/or presume that measures vary together when they do not. Sometimes they assume and/or presume that measures do not vary in concert with one another when they do. For better or worse, budget forecasts are based on these assumptions….