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Correlation (MDX)

  • Artykuł

Returns the correlation coefficient of x-y pairs of values evaluated over a set.

Syntax

Correlation( Set_Expression, Numeric_Expression_y [ ,Numeric_Expression_x ] )

Arguments

  • Set_Expression
    A valid Multidimensional Expressions (MDX) expression that returns a set.
  • Numeric_Expression_y
    A valid numeric expression that is typically a Multidimensional Expressions (MDX) expression of cell coordinates that return a number that represents values for the y-axis.
  • Numeric_Expression_x
    A valid numeric expression that is typically a Multidimensional Expressions (MDX) expression of cell coordinates that return a number that represents values for the x-axis.

Remarks

The Correlation function calculates the correlation coefficient of two pairs of values by first evaluating the specified set against the first numeric expression to obtain the values for the y-axis. The function then evaluates the specified set against the second numeric expression, if present, to obtain the set of values for the x-axis. If the second numeric expression is not specified, the function uses the current context of the cells in the specified set as the values for the x-axis.

Note

The Correlation function ignores empty cells or cells that contain text or logical values. However, the function includes cells with values of zero.

See Also

Reference

MDX Function Reference (MDX)

Help and Information

Getting SQL Server 2005 Assistance

Change History

Release History

17 July 2006
Changed content:
  • Updated syntax and arguments to improve clarity.