Question: Am I Recalculating the Lower and Upper Limits Correctly?
Reader question: “When you are recalculating the average because you see a shift, does the average from your previous calculation only take into account those
Reader question: “When you are recalculating the average because you see a shift, does the average from your previous calculation only take into account those
A question: I have a question about the formulas for columns C & E in your template. Is there a reason they’re set to only
A question: Hi Mark — long time reader, first time sending a question…. I love your recent emphasis on eliminating “red/green” analyses, and moving toward
Question: To have a valid control chart (or “Process Behavior Chart”), don’t I need data that’s normally distributed? In other words, a “bell curve”? Short
Question from a reader: As we know sometimes when we calculate the Natural Process Limits, the Lower Limit is negative. In some measures, that’s not
I’ve gotten this question a few times recently, basically asking if it’s OK to plot metrics like these on a Process Behavior Chart (PBC): Weekly
Here’s a good question from a reader: In your KaiNexus webinar on PBCs you use: LCL = Mean – 3*(MR bar)/1.128 and UCL = Mean
A reader shared a Process Behavior Chart with me and asked this: “On the Falls_Harm tab, the limits seem a bit far away from the
I got a message from a reader of my book Measures of Success: React Less, Lead Better, Improve More. The questions were: “I entered data from
A question that a few people have asked: “Your PBC template, by default, only shows 25 data points. How can I add more points to