11.3. PLOTTING DATA
There are hundreds of computer programs available that will plot data and do some degree of statistical analysis. Some of these are quite good; many are somewhat confusing. Generally the more ambitious the program (three-dimensional plots in various colors, every type of plot imaginable, esoteric statistical analysis), the more chances of getting an output that doesn't tell the desired story. This problem is caused by incomplete or confusing directions or help screens, the user not taking the time to understand the details of the program, or even errors within the program.
Case Study: Not Testing a Graph for ReasonablenessIn a large corporation there was a review of Six Sigma projects. In attendance were many black belts ... |
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