Pareto diagram

What is pareto diagram?
is it restricted to identifying and analyzing code defect?

Hi,

Pareto Diagrams or Pareto Charts are special Bar Charts that are designed to arrange information in such a way that prioritizes for Process Improvement are established.

They are named after named after Vilfredo Pareto, and its use in quality assurance was popularized by Kaoru Ishikawa.

The Pareto chart is one of the seven basic tools of quality control.

Typically on the left vertical axis is frequency of occurrence, but it can alternatively represent cost or other important unit of measure.

The right vertical axis is the cumulative percentage of the total number of occurrences, total cost, or total of the particular unit of measure.

The purpose is to highlight the most important among a (typically large) set of factors. In quality control, the Pareto chart often represents the most common sources of defects, the highest occurring type of defect, or the most frequent reasons for customer complaints, etc.

Their use gives rise to the 80-20 Rule — that 80 percent of the problems stem from 20 percent of the causes.

So, Pareto charts need not only be used to analyze code defects. They can be used a measuring tool against any measurable problems.

Cheers...

Nice description.Generally Pareto chart is used to control process and resources with respect to time.

Hi Ranu,

A Pareto chart is a special type of bar chart named after Vilfredo Pareto, and its use in quality assurance which was popularized by Joseph M. Juran and Kaoru Ishikawa. In this chart the values being plotted are arranged in descending order.

The Pareto chart is one of the seven basic tools of quality control, which include the histogram, Pareto chart, check sheet, control chart, cause-and-effect diagram, flowchart, and scatter diagram.

Typically on the left vertical axis is frequency of occurrence, but it can alternatively represent cost or other important unit of measure. The right vertical axis is the cumulative percentage of the total number of occurrences, total cost, or total of the particular unit of measure. The purpose is to highlight the most important among a (typically large) set of factors. In quality control, the Pareto chart often represents the most common sources of defects, the highest occurring type of defect, or the most frequent reasons for customer complaints, etc.

Their use gives rise to the 80-20 Rule that is 80 percent of the problems stem from 20 percent of the causes.

You can Look in this <a href='http://www.isixsigma.com/library/content/c010527a.asp'><b>LINK</b></a> for further details.