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NPC Downloadable Software
Order fulfillment: Your order confirmation email will contain a link to the My Account login page. Log in using the user name and password that you created for the SSPG Downloads website to enable your access to the executable file and license key. (Note: please ensure that your spam filter does not block mail from info@sspgdownloads.com.) Save this access information in a secure location. Your access is valid for two weeks.
NPC Tools Features
NPC Tools is a Microsoft Excel add-in tool to assist Lean Six Sigma and DFSS practitioners who are working with Non-Parametric and Categorical data. NPC Tools will perform the following:
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Non-Parametric tests such as the 1-sample Wilcoxin Signed-Rank Test, the 2-sample Mann-Whitney test, Mood's Median Test, the Kruskal-Wallis Test, a Runs Test.
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Logistic Regression, both primary and ordinal.
Introduction to Nonparametric Tests
Nonparametric tests make fewer assumptions about the distribution of the data compared to parametric tests like the t-Test. Nonparametric tests do not rely on the estimation of parameters such as the mean or the standard deviation. They are sometimes called distributin-free tests.
Nonparametric tests use Medians and Ranks, thus they are robust to outliers in the data. If, however, the data are normal and free of outliers, nonparametric tests are less powerful than normal based tests to detect a real difference when one exists. Nonparametric tests should be used when the data are non-normal, data cannot be readily transformed to normality, and sample size is small (n<30). If the sample sizes are large, the Central Limit Theorem says that parametric tests are robust to non-normality.
SYSTEM REQUIREMENTS:
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Runs on Excel XP (2002), Excel 2003, Excel 2007, Excel 2010
- Requires Windows XP, Vista or Windows 7
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Not compatible with non-Windows operating systems.
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Compatible on 64 bit Windows but not on Excel 64 bit on 64 bit Windows
Note: to determine your version of Microsoft Excel, select About Microsoft/Office Excel from the Help Screen. The version will appear at the top of the dialog box.
| INTERNATIONAL CUSTOMERS:
Our ecommerce system does not currently accommodate international purchases of downloadable software. Please contact Six Sigma Products Group Customer Service at sales@sspginc.com or by calling 719 785-6757 for assistance with your purchase. We do require prepayment on international orders. |
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