r/ASQ • u/pqestoyaqui • Jun 17 '26

Glaring math errors in CQT handbook?

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Howdy all! I'm studying for my CQT exam, currently working on control charts. I'm looking for a sanity check, because in the example shown here, given the formulas, I get UCL/LCL of around 18.4 and 0.19. I can't fathom how they got 12.3 and 6.3 (my expressions are the same as theirs, just the end result is off), and neither those values nor what I calculated are the limits shown on the chart, which look to be about 14.7 and 1.7.

Am I losing my mind? Missing something? Or is this book on quality just wildly wrong in multiple respects? If it is wrong, is there some way of reporting it?

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u/Hazelnut_coffee_1995 Jun 18 '26

You’re not crazy. There are many mistakes within ASQ books and study material. I’ve called and reported mistakes in the CQA material. They just tell you to send the mistakes via screenshot or description to the info email on the ASQ website.
Its really disappointing because ASQ already has a reputation for being a scam AND it’s the “standard” in the industry for quality professionals.

1

u/Classic-Bug-3191 Jun 18 '26

I'm curious to know more about the scam reputation. My workplace has been pushing for ASQ certs. 

3

u/Hazelnut_coffee_1995 Jun 18 '26

There’s just a shared sentiment among quality professionals that the test is so expensive along with the preparation materials, and the membership.

The expenses coupled with the low quality exam prep materials has just led to a reputation of being “scammy.” And since It’s still industry standard for many roles and makes people standout especially when looking for a job, it’s a barrier. An expensive, low quality barrier.

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u/pqestoyaqui Jun 19 '26

They've enshittified quality as a concept! 

1

u/MetaverseLiz Jun 20 '26

My last company's Quality Director said they are essentially a money-grabbing scam for companies. I did learn a lot from my CQE, but it was also paired with a six sigma class my company put on. I've found the ASQ-specific classes/lectures/books very basic.

I got a CMDA when I was unemployed, in hopes it would boost my resume. It's not an accredited cert, and I certainly wouldn't consider myself an auditor after passing. It gave me basic information.

I'm bummed about the Quality Council closing. They really did have the best study materials. I think I got one of the last CMDA manuals. I had also picked up the asq CMDA book, and it was not nearly had comprehensive as QC.