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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>
- </div></div>
- </div>
- <hr>
- </div>
- <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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