For anyone else with similar problem & for future reference.
<cfscript>
results = StructNew();
StructInsert(results,"average",intAverage)
StructInsert(results,"mean",intMean)
StructInsert(results,"percent",intPercent)
</cfscript>
<cfreturn results>
** make sure that the returntype for the function is set to "struct"**
When trying to retrieve values from the invoke side.
<cfoutput>#StructFind(analysisRet,"average")#, #StructFind(analysisRet,"mean")#, #StructFind(analysisRet,"percent")#</cfoutput>