Histograms are an important tool in using the Six Sigma methods because they are both designed to help better understand the process that are being examined.  They let the user understand any differences that are produced and how much impact that difference has on the central value. 

Variations that need to be considered are added to a standard bar chart in order to facilitate further investigation of those issues.  Any changes that need to be made would be obvious after using this kind of method.  Histograms can be used for large and small projects alike.   Large projects can be broken down into sectors and each of those sectors can be assigned a histogram detailing all the aspects, alternatives and possible solutions.   

Each project will be unique and need its own set of values.  A Six Sigma program has preexisting conditions that can be altered to fit the situation and task at hand.  Whenever there are discrepancies, they can be taken care of by creating a histogram that defines the actual problem.  It can help determine how processes can stay within a certain parameter and still produce consistent results.  Histograms created with broad information are less likely to be effective than if the subject is narrowed to smaller segments.

Once the data has been narrowed down to certain subjects, it must be exposed to measuring and sampling.  This will let you determine values.  Once the values have been determined, find the average overall.  The next step is determining the range that will be used.  The ultimate goal in creating an effective histogram is that all value points across the board must be able to be measured by the same tactics and still produce accurate results. There should be enough consideration for variables that all perspectives of the subject have been accounted for.  Anything that is required and necessary but is not added to the equation will produce an inaccurate result and the values of the data will not match.

All resulting data that is compiled should be arranged in a way that is consistent with the timeline of the project.  Each set of information must be drawn into its own bar graph so that variables and limits are covered, averages are represented, and each class is covered and understood.  A histogram is one of the most useful tools for analyzing information that is available in the business world today, especially when using Six Sigma methods.