编者注：掌握六西格玛不是一件容易的事情，没有统计学的基础是很难驾驭它的。当面对复杂的数据时，手工计算显然不可能，于是六西格玛软件就成为了实施六西格玛时的必选工具。下面是一篇叙述六西格玛软件和工具的文章，文章把六西格玛软件分为三大类：统计工具、软件工具和判断工具，并给出了各自的代表软件。文章虽然是英文写的，但是不是很难，所以没有翻译过来，希望对大家有启发。

Six Sigma Tools And Templates
By: tjacowski      
http://www.streetdirectory.com/travel_guide/21955/corporate_matters/six_sigma_tools_and_templates.html

Projects, both planned and unplanned, can get out of hand, producing undesired or no results after waste of huge resources and time unless they are monitored accurately with the appropriate tools. The pitfalls of not using Six Sigma tools are extremely complex in nature. It becomes impossible to manage the quantum of data in a systematic way that facilitates pragmatic analysis as desired by the project goals.

If you look at it from another angle, which is from the administrative side, pressures like time, ?let?s-see-next-time? from management and project cost overruns can help things grow out of hand.

Six Sigma Tools: Three Distinct Groups

Six Sigma tools can be broadly categorized into three groups as per their utility and nature.

1. Statistical tools
2. Software tools and
3. Judgmental tools

Even though software tools are based on statistics, there is not much difference between them and statistical tools in Six Sigma as they just differ in they way they are made use of. The third one, the judgmental tools, are entirely distinct from the other two, and draw significance by way of aiding decision-making throughout the project phases.

Statistical Tools

The first one under this head, CPM (Critical Path Method), is not exactly a dedicated Six Sigma statistical tool but it still finds its way owing to its ability to contribute to project management. Working under pressure and concurrently running several projects requires a timetable to be put in place. Enumerating the defined critical events on the path you can predict the key dates you cross each hurdles and completion date. Key events are typically ?break down structures? of projects. CPM is basically a planning tool.

The next set of tools can be sub-grouped as analytical tools which aid decision making. For example, the FMEA, Failure Modes and Effects Analysis, helps anticipate problems through analytical interpretations.

Translate vague remarks by customer into measurable functional requirements toning up the ability of the team to design and deliver results that satisfy customers. VOC Requirements Translation and Kano Analysis suffice here. There are tools in this segment to deal with customer data like Customer Segmentation and VOC Data Collection etc.

Judgmental Tools

The Ishikawa Root Cause Analysis Diagram (Fishbone diagram,) is handy to look at reasons for initial problems at a Six Sigma initiative, identify data collection areas and more importantly, to answer why projects are off track and not producing results.

There are several other tools falling into this category, such as the Thought Map Regulation Diagram, Brain Storming & Affinity Group Tool etc. For more complex and non-linear problems, it is not advisable to depend on the Cause and Effect Fishbone Diagram, which is more suited for linear complications. Then there is the Thought Map Relations Diagram for handling complex non-linear issues.

But by far, Brainstorming is still the more dependable ?final? tool for analyzing the data.

Software Tools

Software tools do not just speed up things, but also eliminate errors from the analytical stage. Most popular ones in the category are available as Spreadsheet applications. However, notable ones are
1. The RapAnalyst which simplifies DOE and many predictive modeling activities in data mining.
2. There are total packages like MiniTab, SixNet Intelligence for enterprise-wide deployment.
3. The simplest hand tool is the Six Sigma calculator.