Davis Balestracci’s picture

By Davis Balestracci

This column is in honor of the first anniversary of my late father’s death. In his last days, Dad enjoyed watching golf, and I’d often join him. Watching the recent British Open, I thought I would apply some basic statistical principles to the final scores.

For example, 83 people made the cut, and the ANOVA of their individual round scores is shown in figure 1.

The two ANOM plots are shown in figures 2 and 3.

Dirk Dusharme @ Quality Digest’s picture

By Dirk Dusharme @ Quality Digest

I always look forward to this time of year. Not in anticipation of prezzies under the tree, but for what changes 2009 will bring.

First, this issue brings you the last columns for two long-time columnists.

Quality Digest’s picture

By Quality Digest


A Tell Tool technician using the Hawkeye borescope for part inspection

Carey Wilson’s default image

By Carey Wilson

In autumn 2006, customer demand was exceeding production capacity at Singer Sewing Machine facilities. To meet the capacity constraints, Don Fletcher, CEO of Singer’s parent company, SVP Worldwide, headquartered in Hamilton, Bermuda, decided to launch lean Six Sigma into all facilities around the world.

Quality Digest’s picture

By Quality Digest

Misadventures in Big-Box Land

Regarding “Big Boxes Beware” (“First Word,” Dirk Dusharme, November 2008): If you want to experience grocery-industry customer service at its finest, visit Wegmans. Their employees will load your groceries in your car for free, provide umbrellas for trips to your car in the rain for those who don’t have one, and personally take you to the items that you’re looking for when you can’t find something.

Donald J. Wheeler’s picture

By Donald J. Wheeler

The number of major hurricanes in the Atlantic since 1940 (as we considered in my February column, “First, Look at the Data”) are shown as a histogram in figure 1, below. Some analysts would begin their treatment of these data by considering whether they might be distributed according to a Poisson distribution.

Quality Digest’s picture

By Quality Digest

Error-Proofing Oil-Cap Assembly

Two vision sensors are used at the station where caps are pressed onto the O-ring loaded on the assembly dial.

Quality Digest’s picture

By Quality Digest


Veriteq software at Teledyne technologies

Dirk Dusharme @ Quality Digest’s picture

By Dirk Dusharme @ Quality Digest

This, I swear, is a true story... mostly.

We own a washer and dryer combo unit made by a large home appliance manufacturer--let’s call them “Maytag.” The washer and dryer are in the company’s Neptune series. We’ve had them for about seven years and they’ve worked flawlessly, until recently.

About four months ago the washer started making an awful squealing noise when it went into the spin cycle. No problem, I thought. We have an extended warranty. I’ll just call the friendly Maytag repairman.

Mike Richman’s picture

By Mike Richman

I woke up yesterday morning at 6 a.m., downed a glass of juice, showered, got dressed, grabbed my briefcase, and ran out the door. I arrived at the office at 7 a.m. Waiting for me were nearly 50 e-mails; a couple of them were junk, but most were from actual humans to actual, little ol’ me. When did I get so popular? Soon thereafter the phone started ringing--advertisers, subscribers, contributors, vendors, trade partners, etc., etc., etc. By 7:30, I was already way behind.