306 Part IV: Controlling Your Software Project # (Ipower web hosting)
306 Part IV: Controlling Your Software Project # of Iss es Figure 15-1: 3 This Pareto chart is a basic bar graph that 2 ranks the most common causes for the most 1 common problems in the post implementa tion phase of 0 a software Technical Training Security project. Types of Issues Pareto charts can also help as you continue to strive to understand how you can accomplish each of your future projects more efficiently and document your lessons learned. Creating control charts Like Pareto charts, control charts perform quality control functions on your software projects. A control chart can assist you in determining whether particular processes fall above or below a specified control area. If a process falls outside of the control area or beyond acceptable limits, it probably is not a reliable or consistent process and may require some tweaking (that s a technical term). The control chart contains three horizontal lines: One line represents the acceptable upper limit. One line represents the acceptable lower limit. One line, in the middle, represents the mean. The data points that you plot outside of the upper and lower limits represent issues that may be the result of special causes. After you identify a special cause, you can attempt to eliminate it so that it doesn t result in future errors.
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