Reader survey: 3-way control charts

How often have you seen or used a 3-way control chart?

Plus, see the results of last month’s poll.

Here’s a reader survey question for September:

How often have you seen or used a 3-way control chart?




Thank you for participating in our survey!

The results from last month:

Last month we asked about Windows XP. Our question: Now that Microsoft is no longer providing security updates or support Windows XP, are you still using XP? This SQCpack chart reflect your responses.

"</p