[#BloombergLP-bdlsta-LineFit-xMean]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlsta.adoc[bdlsta]::xref:BloombergLP/bdlsta/LineFit.adoc[LineFit]::xMean
:relfileprefix: ../../../
:mrdocs:

Return the mean of the data set X's. The behavior is undefined unless `1 <= count`.

== Synopsis

Declared in `<bdlsta_linefit.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
double
xMean() const;
----


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