Ive solved this one
If anyone has the same issues i created 4 measures and put them in my table using the all selected function.
Actual Minutes = SUM(‘SAP Last 40 Ship Sets (Hassan)’[Actual Minutes])
Mean = AVERAGEX(ALLSELECTED(‘SAP Last 40 Ship Sets (Hassan)’),[Actual Minutes])
Std Dev = STDEVX.S(ALLSELECTED(‘SAP Last 40 Ship Sets (Hassan)’),[Actual Minutes])
ZScore = DIVIDE(([Actual Minutes]-[Mean]),[Std Dev])
