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Anthony
 
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Nice one Bob - thanks

"Bob Phillips" wrote:

Assuming the values in B1:B31

=AVERAGE(IF(B1:B31<0,B1:B31))

which is an array formula, so commit with Ctrl-Shift-Enter.

--

HTH

RP
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"Anthony" wrote in message
...
Hi,
can anybody advise of a formula to work out an average on a given number

on
the days passed in the month.....??
eg
data below for first 5 days of month
day1,20
day2,25
day3,32
day4,10
day5,9
so the average thus far in the month will be 19.2 (first 5days data

divided
by 5)

if days 6 and 7 are added the formula would then work out the average for
the first 7 days.....and so on
hope thats clear
thanks




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