Plotting average of a standard deviation (please refer Query Below)

Sat, 28 Sep 2013 00:35:38 GMT

I need to plot following

Avg( Stdev (Peak WL Group by Wafer Id) ) Group by Base Growth

Here Base_Growth = LEFT (Wafer_id,11)

Please refer below query

SELECT LEFT (a.Wafer_id,11) Base_Growth , AVG(stdev_PL) Avg_Stdev_PL

FROM

(

SELECT Wafer_id, stdev((peak_lambda))stdev_PL

FROM dbo.f_LED_Reactor_PL_Data WITH (NOLOCK)

GROUP BY Wafer_id

) A

GROUP BY LEFT (a.Wafer_id,11)

Please any input will be helpful.

Thanks,

Nithin

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