The scatter diagram graphs pairs of variable data, with one variable on each axis, to look for a relationship between them. The Potential cause is related w.r.t below as. It’s a visualisation tool for categorising the potential causes of a problem in order to identify its root causes.ĬFT members are identifying the potential cause through Brainstorming process of individual and together. Fish-bone Diagram/Cause and Effects /Ishikawa Diagram:-Ĭause and Effects Diagram is look like a fish that’s why it’s called Fish-bone Diagram, also called Ishikawa diagram. Helps summaries data from process that has been collected over period of time.Ĭlick here to know the “How to Plot Histogram in Excel. Histogram is a one of the 7QC tools, which is most commonly used graph to show frequency distribution. And those 80% contribution was due to the 20% of caused. In the above Pareto Chart, we can see the cumulative% in line graph, According to the Pareto Chart principle 80/20 rule, the 80% cumulative in line graph is filling under the low hardness, it means BH, Damage, SH and Low hardness defers are coving the 80% of contribution over total types of defects. The Pareto principle also known as the 80/20 rule derived from the Italian Economist Vilfredo,Ģ0% of the input creates 80% of the resultsĨ0 % of the effects come from 20% of the causes. Understanding the Pareto Chart principle (The 80/20 rule): Click here to know “How to Plot Pareto Chart In Excel”.

7 qc tools with examples