Today I’m looking at some practical suggestions for reducing sample sizes for attribute testing. A sample is chosen to represent a population. The sample size should be sufficient to represent the population parameters such as mean and standard deviation.

You’re in an early-stage hardware startup or a tinkerer in a toolshed with a product design set to shake up the market. Not sure how to turn your idea into a product? Here’s a step-by-step guide to the product development journey.

I’ll admit it: After five decades watching U.S. companies turning to simplistic accounting tricks to remain profitable, I’m discouraged.

Many articles and some textbooks describe process behavior charts as a manual technique for keeping a process on target.

The difference between common (or random) cause and special (or assignable) cause variation is the foundation of statistical process control (SPC).

Meetings give me a rash. A really bad one. One that not even calamine lotion can soothe. The only things worse than meetings are reports. Standard daily reports, weekly reports, hourly reports. Reports on the status of reports.

If you could experience the perfect workday, what would you be doing? Have you ever taken the time to think about it? 

Inflation is a serious national issue. Credit agency Fitch Ratings just downgraded the U.S.

I can’t count how many times during the past 20 years I’ve heard executives complain that their people aren’t enthusiastically participating in their lean program.

As we learned last month, the precision to tolerance ratio is a trigonometric function multiplied by a scalar constant. This means that it should never be interpreted as a proportion or percentage.