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 Median of column I if column A numbers match
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## Median of column I if column A numbers match

#1
November 20th 09, 09:12 PM posted to microsoft.public.excel.misc
 Abbey Co. external usenet poster Posts: 1
Median of column I if column A numbers match

I'm using the 2007 version of Excel. I have a worksheet with 13,000 lines of
data. Column A is titled ITEM and column I is titled PRICE. I need to find
the Median number of column I when the numbers in column A are the same. I
have 2000 unique ITEM numbers. When the ITEM number in several rows match, I
need a formula to find the Median value of the PRICE.

So if A2, A3, A4 ... A20, and A21 all have the same ITEM number, then I need
the formula to find the Median number of I2, I3, I4 ... I20, and I21.

I've messed around with IF functions and can't seem to get it to work.
#2
November 20th 09, 09:41 PM posted to microsoft.public.excel.misc
 Luke M external usenet poster Posts: 2,722
Median of column I if column A numbers match

Something similar to this array* function:

=MEDIAN(IF(A2:A200=1234,B2:B200))

*Array formulas must be confirmed using Ctlr+Shift+Enter, not just Enter.
--
Best Regards,

Luke M
*Remember to click "yes" if this post helped you!*

"Abbey Co." wrote:

> I'm using the 2007 version of Excel. I have a worksheet with 13,000 lines of
> data. Column A is titled ITEM and column I is titled PRICE. I need to find
> the Median number of column I when the numbers in column A are the same. I
> have 2000 unique ITEM numbers. When the ITEM number in several rows match, I
> need a formula to find the Median value of the PRICE.
>
> So if A2, A3, A4 ... A20, and A21 all have the same ITEM number, then I need
> the formula to find the Median number of I2, I3, I4 ... I20, and I21.
>
> I've messed around with IF functions and can't seem to get it to work.

#3
November 20th 09, 10:29 PM posted to microsoft.public.excel.misc
 T. Valko external usenet poster Posts: 15,768
Median of column I if column A numbers match

>I have a worksheet with 13,000 lines of data.

If the data is sorted so that the items are grouped together:

Item1
Item1
Item1
Item2
Item2
Item2
Item3
Item3

This normally entered formula is much more efficient than an array formula
on that much data.

K2 = some item

=MEDIAN(INDEX(Price,MATCH(K2,Item,0)):INDEX(Price, MATCH(K2,Item,0)+COUNTIF(Item,K2)-1))

Whe

Price refers to I2:I13000
Item refers to A2:A13000

--
Biff
Microsoft Excel MVP

"Abbey Co." <Abbey > wrote in message
...
> I'm using the 2007 version of Excel. I have a worksheet with 13,000 lines
> of
> data. Column A is titled ITEM and column I is titled PRICE. I need to
> find
> the Median number of column I when the numbers in column A are the same.
> I
> have 2000 unique ITEM numbers. When the ITEM number in several rows
> match, I
> need a formula to find the Median value of the PRICE.
>
> So if A2, A3, A4 ... A20, and A21 all have the same ITEM number, then I
> need
> the formula to find the Median number of I2, I3, I4 ... I20, and I21.
>
> I've messed around with IF functions and can't seem to get it to work.

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