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Among methods for inter-well comparisons are the parametric analysis of variance ANOVA as shown here, as well as Kruskal-Wallis and Wilcoxon non-parametric comparisons.
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ChemStat include a powerful and highly customizable Shewhart-CUSUM control chart, for both inter-well and intra-well comparisons.
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Shown here is the multiple parameter time-series plot. Graph any combination of parameters for a single well.
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A multiple well time series plot. Graph any combination of wells for a selected parameters. ChemStat spaces the date axis proportional to the actual date value of sample.
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Includes improved prediction limits. Verification resampling is supported by allowing you to vary the number of samples for each well compared to the prediction limit.
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Here is another view of ChemStat showing Skewness calculations, probability plot, and the Workbook.
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Workbook acts as a repository for all your reports and graphs. Workbook items are saved with your data, and will not change as you apply transformation to the data set.
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ChemStat 2.1 adds the ability to easily exclude individual samples from statistical analyses, and then add them back at a later date.
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ChemStat 5.0 adds Method Selector Tree. The method selector tree simplifies the selection of appropriate statistical methods. Methods are grouped into a logical hierarchy.
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