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MeasuresMean Method (Double, Int32)

Calculates the matrix Mean vector.

Namespace:  Accord.Statistics
Assembly:  Accord.Math (in Accord.Math.dll) Version: 3.8.0
public static double[] Mean(
	this double[][] matrix,
	int dimension
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Type: SystemDouble
A matrix whose means will be calculated.
Type: SystemInt32
The dimension along which the means will be calculated. Pass 0 to compute a row vector containing the mean of each column, or 1 to compute a column vector containing the mean of each row. Default value is 0.

Return Value

Type: Double
Returns a vector containing the means of the given matrix.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type . When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).
double[][] matrix = 
    new double[] { 2, -1.0, 5 },
    new double[] { 7,  0.5, 9 },

// column means are equal to (4.5, -0.25, 7.0)
double[] colMeans = Stats.Mean(matrix, 0);

// row means are equal to (2.0, 5.5)
double[] rowMeans = Stats.Mean(matrix, 1);
See Also