[C#/COMMON] 분산 구하기

■ 분산을 구하는 방법을 보여준다.

▶ 예제 코드 (C#)


using System;

#region 분산 구하기 - GetVariance(valueArray, average)

/// <summary>
/// 분산 구하기
/// </summary>
/// <param name="valueArray">값 배열</param>
/// <param name="average">평균</param>
/// <returns>분산</returns>
public static double GetVariance(double[] valueArray, double average)
{
    int valueCount = valueArray.Length;

    if(valueCount == 0)
    {
        return 0d;
    }

    double variance = 0d;

    try
    {
        for(int i = 0; i < valueCount; i++)
        {
            variance += Math.Pow(valueArray[i] - average, 2);
        }
    }
    catch(Exception)
    {
        throw;
    }

    return variance;
}

#endregion

using System;

#region 분산 구하기 - GetVariance(valueArray, average)

/// <summary>

/// 분산 구하기

/// </summary>

/// <param name="valueArray">값 배열</param>

/// <param name="average">평균</param>

/// <returns>분산</returns>

public static double GetVariance(double[] valueArray, double average)

{

int valueCount = valueArray.Length;

if(valueCount == 0)

{

return 0d;

}

double variance = 0d;

try

{

for(int i = 0; i < valueCount; i++)

{

variance += Math.Pow(valueArray[i] - average, 2);

}

catch(Exception)

{

throw;

}

return variance;

}

#endregion