Limiting Average

Perfx

Board Regular
Joined
May 31, 2004
Messages
117
I am using a formula to find the average number of days between two dates across multiple columns. To Further validate this data, I would like to limit the time span which it looks back on. I would like to limit it to looking back across the last 120 days or so. Here is the Formula I am currently using:

=SUMIF(V2:V356,"<100",V2:V356)/COUNTIF(V2:V356,"<100")

Any help is appreciated.
 

Excel Facts

Which lookup functions find a value equal or greater than the lookup value?
MATCH uses -1 to find larger value (lookup table must be sorted ZA). XLOOKUP uses 1 to find values greater and does not need to be sorted.
Here you go
Jones Co Lot Progress Log.xls
ABCDEFGHIJKLMNOPQRSTUV
1LOT#SUBDIVISIONHOUSETYPEELEV#DRAWINGFNDFNDTYPEFirstFloorWallHeightSTARTORDERPre-ConstructionOKtoBuildP.O.STCDesignReceivedTJICompleteDateFirst&SecondFloorDepthsLUMBERQuoteNumberDateSTAIRSORDEREDWINDOWSORDEREDLUMBERDELIVERYPANELDELIVERIESStarttoDel.DaysStartOrdertoP.O.
291VintageKnollsElderwood306/15/05Slab06/22/0507/12/05N/An/a8/12/20055120
323EnclaveLinwoodII706/03/05Crawl06/01/0507/05/058/15/20057534
452VintageKnollsStamford206/03/05Slab06/03/0507/19/05N/An/a8/15/20057346
559VintageKnollsLindenII506/21/05Crawl06/22/0507/15/058/16/20055523
2006
 
Upvote 0
To give an average of values in V2:V356 where that value is less than 100 and the date in same row in S2:S356 is within the last 120 days

=AVERAGE(IF(TODAY()-S2:S356<120)*(V2:V356<100),V2:V356))

confirmed with CTRL+SHIFT+ENTER
 
Upvote 0
Perfx,
In addition to barry houdini's solution, here's another:
Book1
STUVW
1LumberDeliveryStarttoPO30.75
21/1/200625
32/1/200636
48/12/200620
58/15/200634
68/15/200646
78/16/200623
Sheet1
 
Upvote 0

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