Allows you to adjust histogram bin intervals and the approximate number of bars.Allows you to experiment with how spec limits impact Cp Cpk by changing them in the histogram calculations worksheet.Calculations can be viewed and updated in the Excel worksheet created by QI Macros.Calculates more than 20 process capability analysis metrics including Cp Cpk and Pp Ppk.What is Cool about QI Macros Histogram Maker in Excel? These are numeric values that tell you how well your process is meeting customer requirements. The best histogram maker's will also calculate process capability metrics Cp, Cpk and Pp Ppk. Data points outside of the spec limits represent products or processes that don't meet customer requirements.
There can be both an upper spec limit (USL) and a lower spec limit (LSL) or just one of the two. Does your data fit or not? Is it centered?Ĭustomer Requirements are the Specification Limits (Goal Posts)Įxperts refer to these goal posts as specification limits. They are most valuable when they display your customer's requirements as goal posts. Histograms show the spread, or dispersion, of variable data. QI Macros will do the math and draw the graph for you.From the data analysis window, select Histogram. Select Histograms & Capability from QI Macros menu. Step to Create a Histogram Mac Excel First of all, go to the data tab and click on Data Analysis button.Free Agile Lean Six Sigma Trainer Training.Animated Lean Six Sigma Video Tutorials.Statistical Analysis - Hypothesis Testing.
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