Pareto analysis tool

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Pareto analysis tool

  1. 1. Vital few Trivial many
  2. 2. FICCI CE Pareto analysis The Pareto principle is to concentrate on “vital few” rather than “trivial many” in tackling quality problems. The Pareto diagram is a tool for identifying few actually important causes for defectives which result in large proportion of defectives, instead of concentrating on large number of causes which contributes to a small proportion of the total defectives.
  3. 3. FICCI CE 80 : 20 A term referring to the Pareto principle, which was first defined by J.M. Juran in 1950. The principle suggests most effect come from relatively few causes; that is 80% of the effects come from 20% of the possible causes.
  4. 4. FICCI CE Constructing a Pareto chart A Pareto diagram is a bar chart of number of defectives with bars representing the number of defectives due to different sources arranged in descending order of their importance. A line graph of cumulative number of defectives (Ogive) is also drawn in the same chart. The causes are given along the x axis, the number of defectives are given on the left y axis and the cumulative %defectives is given along the right y axis.
  5. 5. FICCI CE Constructing a Pareto chart Data on defective cords S No. Source of defectives No. of Percentage defectives defectives 1 Wrong Ply TPM 75 25 2 Plyless Feeding 150 50 3 Single end 30 10 4 Wrong Cable TPM 45 15 Total 300 100
  6. 6. FICCI CE Arranging data in descending order Data on defective cords S No. Source of defectives No. of Percentage Cumulative defectives defectives % defectives 1 Plyless Feeding 150 50 50 2 Wrong Ply TPM 75 25 75 3 Wrong Cable TPM 45 15 90 4 Single end 30 10 100 Total 300 100
  7. 7. FICCI CE Pareto analysis of defective cords 300 100% 250 80% 200 60% 150 40% 100 50 20% 0 0% Plyless Wrong ply Wrong Single feeding TPM cable TPM end
  8. 8. FICCI CE

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