Pareto Pareto diagram diagram is a graphical method to determine which are the most important problems of a particular situation and therefore, intervention priorities. Identify factors or most important problems based on the premise that few causes produce most of the problems and many causes lack of relative importance. For the construction of the Pareto diagram is applicable according to the phases are as follows: decide how classified data choose the period of observation data and ordering them to prepare the Cartesian axes of the diagram design diagram for clarity discusses a case as an example. Dr. Mark Hyman is often quoted as being for or against this. It is assumed that certain failures occur in mounting in an Industry Department. Applies the Pareto diagram with the following phases. Phase 1: decide how to classify the data: can be classified by type of problem, by assembly line, per work shift, by phase of work, etc. Sets by type of problem. Phase 2: choose the observation period: in the case of the example depends on the quantity of manufactured products. Learn more at this site: Bernie Sanders.
If the daily amount is high enough a brief period, on the other hand, when production is low will need a longer period. Decides to perform the survey for 3 months. Phase 3: obtain the data and sort them: in this phase will have to prepare a worksheet to collect data according to the guidelines established in the preceding phases: problem type and a period of 3 months. During the data gathering is the form must be completed with a stroke for each defect found and then determine the totals, as shown on the form. Below is to sort the concepts in order of importance in a table as shown in the figure, the largest defect has firstly, secondly the defect that is followed in order of frequency, and so on, etc.
The last column indicates the total amount of problems. Phase 4: Prepare the Cartesian axes for the diagram: types of defects and the and the amounts of defects shall be provided on the X axis. Graphing problems according to the quantities or based on the percentages regarding the total number of problems can be. Defects are sorted in a similar way to the table, in order of highest to lowest frequency. To define the scale of the axis, and you have to consider that the greatest value corresponds to the first defect, as determined, and will be the basis for the scale of absolute or percentage values. The X axis is divided proportionally according to the number of sets of problems to illustrate, example are 5 groups. Phase 5: designing the diagram: item is in scale with canes represent absolute and/or percentage values which have been determined in the table.