Average Lead Time Formula

bobgrand

Board Regular
Joined
Apr 14, 2008
Messages
244
Office Version
  1. 365
Platform
  1. Windows
Hello all,

I have an inventory list along with the lead time of each item. Can someone help me with a formula to get the 1 average lead time number for all items for each vendor.

VENDOR A has 330 items - Average Lead Time for Vendor A 5.65
VENDOR B has 693 items - Average Lead Time for Vendor B 3.54

Any help is greatly appreciated

Bob
 

Excel Facts

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Press Ctrl+End to move to what Excel thinks is the last used cell.
If I’m understanding, you’re asking for an average of averages? In which case you want to look at geometric mean. There are online calculators or Wikipedia has a decent explanation.
 
Last edited:
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Thanks Doc.

That was an interesting read. I used the formula in excel and it does seem to give a better number. Is there a way to subtotal the GEOMEAN when filtering down to specific vendors?
 
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Honestly, I don’t know for sure; you’d want a function for SUBPRODUCT (similar to SUBTOTAL) but I don’t see it off hand
 
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I did have one additional thought about your second question. Have you thought of using SUMPRODUCT to isolate results for specific vendors? No really a pro in that area, so would recommend starting a separate thread if the Google fails you.
 
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Just an example - to get GEOMEAN from only visible cells in say B2:B9 this array formula should work.

=GEOMEAN(IF(SUBTOTAL(3,OFFSET(B2:B9,ROW(B2:B9)-ROW(A2),0,1)),B2:B9))
confirmed with Ctrl+Shift+Enter, not just Enter

Hope this helps

M.
 
Upvote 0
A more robust formula - works with rows hidden manually or by filtering.

=GEOMEAN(IF(SUBTOTAL(103,OFFSET(B2:B9,ROW(B2:B9)-ROW(A2),0,1)),B2:B9))
confirmed with Ctrl+Shift+Enter, not just Enter

M.
 
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