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| <div><h2 class="title"> |
| <a name="statistical_distribution_explorer"></a>Statistical Distribution Explorer</h2></div> |
| <div><div class="authorgroup"> |
| <div class="author"><h3 class="author"> |
| <span class="firstname">Paul A.</span> <span class="surname">Bristow</span> |
| </h3></div> |
| <div class="author"><h3 class="author"> |
| <span class="firstname">John</span> <span class="surname">Maddock</span> |
| </h3></div> |
| </div></div> |
| <div><p class="copyright">Copyright © 2008 Paul A. Bristow, John Maddock</p></div> |
| <div><div class="legalnotice"> |
| <a name="id759711"></a><p> |
| Distributed under the Boost Software License, Version 1.0. (See accompanying |
| file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) |
| </p> |
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| <p> |
| A Windows utility to show the properties of statistical distributions using parameters |
| provided interactively by the user. |
| </p> |
| <p> |
| The distributions provided are: |
| </p> |
| <div class="itemizedlist"><ul class="itemizedlist" type="disc"> |
| <li class="listitem"> |
| bernoulli |
| </li> |
| <li class="listitem"> |
| beta_distribution |
| </li> |
| <li class="listitem"> |
| binomial_distribution |
| </li> |
| <li class="listitem"> |
| cauchy |
| </li> |
| <li class="listitem"> |
| chi_squared |
| </li> |
| <li class="listitem"> |
| exponential |
| </li> |
| <li class="listitem"> |
| extreme_value |
| </li> |
| <li class="listitem"> |
| fisher_f |
| </li> |
| <li class="listitem"> |
| gamma_distribution |
| </li> |
| <li class="listitem"> |
| lognormal_distribution |
| </li> |
| <li class="listitem"> |
| negative_binomial_distribution |
| </li> |
| <li class="listitem"> |
| normal_distribution |
| </li> |
| <li class="listitem"> |
| pareto |
| </li> |
| <li class="listitem"> |
| poisson |
| </li> |
| <li class="listitem"> |
| rayleigh |
| </li> |
| <li class="listitem"> |
| students_t |
| </li> |
| <li class="listitem"> |
| triangular |
| </li> |
| <li class="listitem"> |
| uniform |
| </li> |
| <li class="listitem"> |
| weibull |
| </li> |
| </ul></div> |
| <p> |
| Properties of distributions computed are: |
| </p> |
| <div class="itemizedlist"><ul class="itemizedlist" type="disc"> |
| <li class="listitem"> |
| mean |
| </li> |
| <li class="listitem"> |
| mode |
| </li> |
| <li class="listitem"> |
| median |
| </li> |
| <li class="listitem"> |
| variance |
| </li> |
| <li class="listitem"> |
| standard deviation |
| </li> |
| <li class="listitem"> |
| coefficient of variation, |
| </li> |
| <li class="listitem"> |
| skewness |
| </li> |
| <li class="listitem"> |
| kurtosis |
| </li> |
| <li class="listitem"> |
| excess |
| </li> |
| <li class="listitem"> |
| range supported |
| </li> |
| </ul></div> |
| <p> |
| Calculated, from values provided, are: |
| </p> |
| <div class="itemizedlist"><ul class="itemizedlist" type="disc"> |
| <li class="listitem"> |
| probability density (or mass) function (PDF) |
| </li> |
| <li class="listitem"> |
| cumulative distribution function (CDF), and complement |
| </li> |
| <li class="listitem"> |
| Quantiles (percentiles) are calculated for typical risk (alpha) probabilities |
| (0.001, 0.01, 0.5, 0.1, 0.333) and for additional probabilities provided |
| by the user. |
| </li> |
| </ul></div> |
| <p> |
| Results can be saved to text files using Save or SaveAs. All the values on the |
| four tabs are output to the file chosen, and are tab separated to assist input |
| to other programs, for example, spreadsheets or text editors. |
| </p> |
| <p> |
| Note: Excel (for example), only shows 10 decimal digits, by default: to display |
| the maximum possible precision (abotu 15 decimal digits), it is necessary to |
| format all cells to display this precision. Although unusually accurate, not |
| all values computed by Distexplorer will be as accurate as this. Values shown |
| as NaN cannot be calculated from the value(s) given, most commonly because the |
| value input is outside the range for the distribution. |
| </p> |
| <p> |
| For more information, including downloads, see |
| </p> |
| <p> |
| <a href="http://distexplorer.sourceforge.net/" target="_top">Distexplorer at Sourceforge</a> |
| </p> |
| <p> |
| This Microsoft Windows 32 package distribution.exe was generated from a C# program |
| and uses a boost_math.dll generated using the Boost.Math C++ source code from |
| the Boost.Math Toolkit, compiled in CLI mode, containing the underlying statistical |
| distribution classes and functions. |
| </p> |
| <p> |
| All source code is freely available for view and use under the <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">Boost |
| Open Source License</a>. |
| </p> |
| <p> |
| <a href="https://svn.boost.org/svn/boost/sandbox%5Cmath_toolkit%5Clibs%5Cmath%5Cdot_net_example" target="_top">Math |
| Toolkit C++ source code</a> to produce boost_math.dll is in the most recent |
| <a href="http://www.boost.org" target="_top">Boost</a> release, initially 1.35.0. |
| </p> |
| <p> |
| It is distributed as a single Windows Installer package Setupdistex.msi. Unzip |
| the distexplorer.zip to a temporary location of your choice and run setup.exe. |
| </p> |
| <p> |
| (Note that .NET framework 2.0 and VCredist are requirements for this program. |
| Most recent and updated Windows environments will already have these, but they |
| are quickly, easily and safely installed from the Microsoft site if required.) |
| </p> |
| <p> |
| (The package cannot be run on other platforms at present but it should be possible |
| to build an equivalent utility on any C/C++ platform if anyone would like to |
| undertake this task.) |
| </p> |
| </div> |
| <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> |
| <td align="left"><p><small>Last revised: July 01, 2010 at 21:45:23 GMT</small></p></td> |
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