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Standered deviation of last 20 values in the database column

P: 20
hi all
i want to calculate the Standered deviation of last 20 values in the database column,how can i do it using DTDEV function of SQL.
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Reply me
Thanks in advance to all.
Oct 8 '06 #1
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PEB
Expert 100+
P: 1,418
PEB
Hi,

You enter in query design view, assign the table on which you want to do the calculation...

Choose the column that contains the values for the standart deviation...

Press the sigma bouton /sum, total/

Instaed group By select Stdev

It's ready to see the deviation!

Switch to datasheet view for this!

:)
Oct 8 '06 #2

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