Solved

Find the SUM of the Latest Values in a Table

Posted on 2014-09-18
2
109 Views
Last Modified: 2014-09-18
This is a re-packaging of a series of questions recently posed regarding calculations needed on the bottom-most or most-recent data in a table.


Background:
The attached workbook contains an Excel Table showing daily sales data.  Sales are only recorded on weekdays and non-holidays, so there are gaps in the table and that is normal (if not ideal).

There is a need to show the last N-number of days of sales, counting by the sales reported.  Currently, there are a set of formulas (H8 and I8 to determine the rows containing the latest sales within N-days), a helper column (K) of functions used to determine the first applicable row, and a final formula to sum up the total (F8).

Request:
Create a single formula in F8 that replicates this process without the need of the functions in H8 and I8 or the helper column in K.

Note that the formula in F8 can immediately be re-written as:
=SUM(INDIRECT("B"&MAX($K$2:$K$366)&":B"&MATCH(10^10,B:B,1)))
but I've left it "dependent" so you can see the steps better.

The key problem for me has been trying to create an array function that reproduces the result in H8.  I've tried this as an array function ([Ctrl]+[Shift]+[Enter]):
=SUMPRODUCT((COUNT(OFFSET($B$1,ROW(2:366)-1,0,$D$8*2,1))=$D$8)*ROW(2:366))
but Excel doesn't like the ROW(2:366) argument inside the OFFSET and it fails.

Thanks,
-Glenn
SumLatestValues.xlsx
0
Comment
Question by:Glenn Ray
2 Comments
 
LVL 18

Accepted Solution

by:
krishnakrkc earned 500 total points
ID: 40331996
Try this array formula

=SUM(INDEX(Table1[Sales],MATCH(9.999E+307,Table1[Sales])):INDEX(Table1[Sales],LARGE(IF(Table1[Sales]<>"",ROW(Table1[Sales])),D8)-1))

Kris
0
 
LVL 27

Author Closing Comment

by:Glenn Ray
ID: 40332013
I completely forgot about the LARGE function!

My own preference is to swap the two INDEX functions for the first and last cells, but otherwise, this is an excellent solution.

Regards,
-Glenn
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

How to quickly and accurately populate Word documents with Excel data, charts and images (including Automated Bookmark generation) David Miller (dlmille) Synopsis In this article you’ll learn how to use ExcelToWord! to copy data,charts, shapes …
Some code to ensure data integrity when using macros within Excel. Also included code that helps secure your data within an Excel workbook.
This Micro Tutorial will demonstrate in Google Sheets how to use the HYPERLINK function to create live links inside your spreadsheet.
This Micro Tutorial will demonstrate how to create pivot charts out of a data set. I also added a drop-down menu which allows to choose from different categories in the data set and the chart will automatically update.

911 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

21 Experts available now in Live!

Get 1:1 Help Now