Returns the minimum value of three numbers

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//http://isotopescreencapture.codeplex.com/
//The MIT License (MIT)
namespace Isotope.Math
{
    public static class MathUtil
    {
        /// <summary>
        /// Returns the minimum value of three numbers
        /// </summary>
        /// <param name="a"></param>
        /// <param name="b"></param>
        /// <param name="c"></param>
        /// <returns></returns>
        public static double Min(double a, double b, double c)
        {
            return (System.Math.Min(System.Math.Min(a, b), c));
        }
   }
}

   
     


Returns the maximum value of three numbers

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//http://isotopescreencapture.codeplex.com/
//The MIT License (MIT)
namespace Isotope.Math
{
    public static class MathUtil
    {
        /// <summary>
        /// Returns the maximum value of three numbers
        /// </summary>
        /// <param name="a"></param>
        /// <param name="b"></param>
        /// <param name="c"></param>
        /// <returns></returns>
        public static double Max(double a, double b, double c)
        {
            return (System.Math.Max(System.Math.Max(a, b), c));
        }

    }
}

   
     


The Method converts the temperature in Celcius to Fahrenheit

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//Microsoft Public License (Ms-PL)
//http://c4fdevkit.codeplex.com/license
using System;
using System.Collections.Generic;
using System.Text;
using System.Text.RegularExpressions;

namespace C4F.DevKit.WebServices
{
    /// <summary>
    /// Provides useful methods like conversion methods.
    /// </summary>
    public static class Utility
    {

        /// <summary>
        /// The Method converts the temperature in Celcius to Fahrenheit
        /// </summary>
        /// <param name="temperature">Temperature in Celcius</param>
        /// <returns>Temperature in Fahrenheit</returns>
        public static double CelciusToFahrenheit(double temperature)
        {
            return (9.0 / 5.0) * temperature + 32;
        }
       
    }
}

   
     


The Method converts the temperature in Fahrenheit to Celcius

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//Microsoft Public License (Ms-PL)
//http://c4fdevkit.codeplex.com/license

using System;
using System.Collections.Generic;
using System.Text;
using System.Text.RegularExpressions;

namespace C4F.DevKit.WebServices
{
    /// <summary>
    /// Provides useful methods like conversion methods.
    /// </summary>
    public static class Utility
    {
        /// <summary>
        /// The Method converts the temperature in Fahrenheit to Celcius
        /// </summary>
        /// <param name="temperature">Temperature in Fahrenheit</param>
        /// <returns>Temperature in Celcius</returns>
        public static double FahrenheitToCelcius(double temperature)
        {
            return (5.0 / 9.0) * (temperature - 32);
        }

       
    }
}

   
     


Statistical functions: Standard Deviation

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#region Disclaimer/Info

///////////////////////////////////////////////////////////////////////////////////////////////////
// Subtext WebLog
// 
// Subtext is an open source weblog system that is a fork of the .TEXT
// weblog system.
//
// For updated news and information please visit http://subtextproject.com/
// Subtext is hosted at Google Code at http://code.google.com/p/subtext/
// The development mailing list is at subtext@googlegroups.com 
//
// This project is licensed under the BSD license.  See the License.txt file for more information.
///////////////////////////////////////////////////////////////////////////////////////////////////
// This class adapted from Rama Krishna Vavilala&#039;s Tag Cloud control article on 
// Code Project: http://www.codeproject.com/useritems/cloud.asp

#endregion

using System;
using System.Collections.Generic;
using System.Globalization;

namespace Subtext.Framework.Util
{
    /// <summary>
    /// Statistical functions
    /// </summary>
    public static class Statistics
    {

        public static double StandardDeviation<TValue>(this IEnumerable<TValue> values, out double mean)
        {
            var converted = new List<double>();
            foreach(TValue value in values)
            {
                converted.Add(Convert.ToDouble(value, CultureInfo.InvariantCulture));
            }
            return StandardDeviation(converted, out mean);
        }
    }
}

   
     


Statistical functions: Standard Deviation

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#region Disclaimer/Info

///////////////////////////////////////////////////////////////////////////////////////////////////
// Subtext WebLog
// 
// Subtext is an open source weblog system that is a fork of the .TEXT
// weblog system.
//
// For updated news and information please visit http://subtextproject.com/
// Subtext is hosted at Google Code at http://code.google.com/p/subtext/
// The development mailing list is at subtext@googlegroups.com 
//
// This project is licensed under the BSD license.  See the License.txt file for more information.
///////////////////////////////////////////////////////////////////////////////////////////////////
// This class adapted from Rama Krishna Vavilala&#039;s Tag Cloud control article on 
// Code Project: http://www.codeproject.com/useritems/cloud.asp

#endregion

using System;
using System.Collections.Generic;
using System.Globalization;

namespace Subtext.Framework.Util
{
    /// <summary>
    /// Statistical functions
    /// </summary>
    public static class Statistics
    {

        public static double StandardDeviation<TValue>(this IEnumerable<TValue> values, out double mean)
        {
            var converted = new List<double>();
            foreach(TValue value in values)
            {
                converted.Add(Convert.ToDouble(value, CultureInfo.InvariantCulture));
            }
            return StandardDeviation(converted, out mean);
        }
    }
}

   
     


Statistical functions: Mean

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#region Disclaimer/Info

///////////////////////////////////////////////////////////////////////////////////////////////////
// Subtext WebLog
// 
// Subtext is an open source weblog system that is a fork of the .TEXT
// weblog system.
//
// For updated news and information please visit http://subtextproject.com/
// Subtext is hosted at Google Code at http://code.google.com/p/subtext/
// The development mailing list is at subtext@googlegroups.com 
//
// This project is licensed under the BSD license.  See the License.txt file for more information.
///////////////////////////////////////////////////////////////////////////////////////////////////
// This class adapted from Rama Krishna Vavilala&#039;s Tag Cloud control article on 
// Code Project: http://www.codeproject.com/useritems/cloud.asp

#endregion

using System;
using System.Collections.Generic;
using System.Globalization;

namespace Subtext.Framework.Util
{
    /// <summary>
    /// Statistical functions
    /// </summary>
    public static class Statistics
    {
        public static double Mean(this IEnumerable<double> values)
        {
            double sum = 0;
            int count = 0;

            foreach(double d in values)
            {
                sum += d;
                count++;
            }

            return sum / count;
        }
    }
}