See the image above for my hypothetical grade sheet in Libre Calc. There are two rows. One contains the points achieved for each assignment while the second records the points available. I would like to keep a running average of the grades, but I do not wish to update the formula for the running average each time a new assignment is added. Currently, I am using:
SUMPRODUCT( ENTIRE_POINTS_ACHIEVED_ROW, 1 / (ENTIRE_POINTS_AVAILABLE_ROW) )
I then find the average by dividing by the number of non-blank rows, using COUNTA().
As you can see above, assignments 1-3 are complete, but there is no information for the fourth. Because of this, I get a divide by zero error. How can I accommodate for this? Or, is there a more straightforward way to achieve what I've described above?
As Scott Craner proposed , using an Array formula is the way to follow. With LO Calc, the following formula should work (enter it with CTRL+SHIFT+ENTER to make it an array formula):
=SUMPRODUCT(IF(B2:E2<>0; B2:E2; "");1/B3:E3)/COUNT(B2:E2)*100
I've adapted an example from the OpenOffice.org Calc documentation for this.
Use this array formula instead:
=SUM(IF($B$3:$E$3<>"",B2:E2/B3:E3))/COUNT(B2:E2)
Being an array it must be confirmed with Ctrl-Shift-Enter. If done properly {} will be put around the formula.
This is excel, It may not work in LibreOffice.
Related
I have two lists of products in Excel. Each list will be of varying length each month.
Is there a way to combine the two lists into a third list, with the second list being underneath the first?
I would like to do this avoiding macros.
I image this could be done using Dynamic Arrays, but I can't figure it out.
Please see an example below:
Thank you so much in advance.
I have had this problem before and used this tutorial to help me. I attach the example sheet also, which provides the formula that may work for your problem.
See the image below for cell references - then try this:
=IFERROR(INDEX($B$3:$B$7, ROWS(H2:$H$2)), IFERROR(INDEX($D$3:$D$4, ROWS(H2:$H$2)-ROWS($B$3:$B$7)), IFERROR(INDEX($F$3:$F$6, ROWS(H2:$H$2)-ROWS($B$3:$B$7)-ROWS($D$3:$D$4)), "")))
I have managed to find a solution that works for me, where the lists are of variable length.
Using a similar scenario to Mardi-Louise's answer, I am using the following formula in cell F3, and then dragging down:
=IF(B3<>"",B3,OFFSET($D$3,ROW()-COUNTA($B$3:$B$7),0))
Explanation:
So long as List 1 is not finished, it takes the value from List 1.
Once List 1 is finished, it begins at the top of List 2, and uses an offset to move down.
I'm late to the party, but for anyone still looking for this there's (now) a function for this in Excel 365: vstack(array1;array2;...)
Here is Microsoft's page on it
With the arrays as columns in tables you'll get dynamic lengths. It's also possible to combine vstack() with for example unique().
I benefitted from Answer 2 with slightly different syntax. The ROW() function provides an output based on the absolute cell address when an output based on the relative position of the list is actually more generally applicable. I found the following syntax works better to reference the output of ROW() to the cell above the top cell of range D3:D8:
=IF(B3<>"",B3,OFFSET($D$2,ROW()-ROW($D$2)-COUNTA($B$3:$B$7),0))
Additionally, the COUNTA function can provide inconsistent results when cells in the range are not based on simple data but on the output of formulas which can be equal to 0 or blank without actually being empty. In that case COUNTIF often works better such as:
=IF(B3<>"",B3,OFFSET($D$2,ROW()-ROW($D$2)-COUNTIF($B$3:$B$7,"<>"&0),0))
I'm using counting invoice numbers (text) in a table's column, but the Excel formula seems to be confusing some values.
I copied small sample of these - please refer to below:
The formulas are as follow:
=COUNTIFS(A1:A19,A1)
=COUNTIF(A1:A19,A1)
As you can see these invoice numbers differ and the results of these functions suggest as if all were the same.
I googled it for 1 hour but I didn't find such as issue as mine.
If anybody had any clue why could this behave in such way I'll be super grateful!
Rob
Each time you copy down this formula it will add 1 row to each. For example the second row of datas formula will be =COUNTIFS(A2:A20,A2). To lock these cells in the formula use $
Your formula should be =COUNTIFS(A$1:A$19,A1)
I've solved this myself:
ROOTCAUSE
Excel tried to be helpful and read these invoice numbers as actual numbers (despite these being defined already in Power Query as text)
Then, Excel fooled me and despite showing that it works on it as a string (I was evaluating the formula) it worked on it as number
Above means that it transformed exemplary "00100001010000018525" to 1.00001E+17, which cut down this to "100001010000018000" - that's the moment Excel stopped fooling around and showed that value in the formula bar.
I think I don't need to tell why countif perceived all these values as equal.
SOLUTION
I simply appended one letter after each invoice number to get e.g. "00100001010000018525a" what forces Excel to quit its gimmicks and games.
Case closed.
I suspect this is a bug in COUNTIF, or maybe by design.
However, to workaround this in the formula, without having to change your data, try adding a wild-card character:
=COUNTIF(A1:A19,"*"&A1)
I would need some help again with another excel countif expression. I have the line i2:al2 which contains leftover stock data.I am building a worksheet to calculate remaining stocks in % as per supervisor's wish.
As I am working with %, for example if I say that 90% sales that means we have 103 stock left and with 91% sales I have 100 stock left.
Anyways I got around to count the number of stock left in line i2:a12 using countifs.
Example if I need to calculate leftover stock for sales at 90% which means leftover stock level of 100 to 102. I have used :
=countif(range,">100")-countif(range,">102")
This method seems to work till I reach negative numbers, i.e. oversales. For example, if I try to do the following:
=countif(range,"-100")-countif(range,">0")
the formula seems to stop working. If I count manually using a conditional formatting I get a totally different answer for the oversales.
Maybe I am getting the logic of the countif function wrong. My purpose for the expressison is:
=count(in range, values >=X & <=Y)
As I have only access to excel 2003 I cannot use Countifs method. Anyone could help me on this issue?
Many thanks.
You can use an array formula:
=SUM((range>=x)*(range<=y))
For that to work, you need to press CTRL-SHIFT-ENTER for that to use array formula.
Alternatively, using what simoco gives in the comment works too without having to save as array formula.
I would like to create a succinct Excel formula that SUMS a column based on a set of AND conditions, plus a set of OR conditions.
My Excel table contains the following data and I used defined names for the columns.
Quote_Value (Worksheet!$A:$A) holds an accounting value.
Days_To_Close (Worksheet!$B:$B) contains a formula that results in a number.
Salesman (Worksheet!$C:$C) contains text and is a name.
Quote_Month (Worksheet!$D:$D) contains a formula (=TEXT(Worksheet!$E:$E,"mmm-yy"))to convert a date/time number from another column into a text based month reference.
I want to SUM Quote_Value if Salesman equals JBloggs and Days_To_Close is equal to or less than 90 and Quote_Month is equal to one of the following (Oct-13, Nov-13, or Dec-13).
At the moment, I've got this to work but it includes a lot of repetition, which I don't think I need.
=SUM(SUMIFS(Quote_Value,Salesman,"=JBloggs",Days_To_Close,"<=90",Quote_Month,"=Oct-13")+SUMIFS(Quote_Value,Salesman,"=JBloggs",Days_To_Close,"<=90",Quote_Month,"=Nov-13")+SUMIFS(Quote_Value,Salesman,"=JBloggs",Days_To_Close,"<=90",Quote_Month,"=Dec-13"))
What I'd like to do is something more like the following but I can't work out the correct syntax:
=SUMIFS(Quote_Value,Salesman,"=JBloggs",Days_To_Close,"<=90",Quote_Month,OR(Quote_Month="Oct-13",Quote_Month="Nov-13",Quote_Month="Dec-13"))
That formula doesn't error, it just returns a 0 value. Yet if I manually examine the data, that's not correct. I even tried using TRIM(Quote_Month) to make sure that spaces hadn't crept into the data but the fact that my extended SUM formula works indicates that the data is OK and that it's a syntax issue. Can anybody steer me in the right direction?
You can use SUMIFS like this
=SUM(SUMIFS(Quote_Value,Salesman,"JBloggs",Days_To_Close,"<=90",Quote_Month,{"Oct-13","Nov-13","Dec-13"}))
The SUMIFS function will return an "array" of 3 values (one total each for "Oct-13", "Nov-13" and "Dec-13"), so you need SUM to sum that array and give you the final result.
Be careful with this syntax, you can only have at most two criteria within the formula with "OR" conditions...and if there are two then in one you must separate the criteria with commas, in the other with semi-colons.
If you need more you might use SUMPRODUCT with MATCH, e.g. in your case
=SUMPRODUCT(Quote_Value,(Salesman="JBloggs")*(Days_To_Close<=90)*ISNUMBER(MATCH(Quote_Month,{"Oct-13","Nov-13","Dec-13"},0)))
In that version you can add any number of "OR" criteria using ISNUMBER/MATCH
You can use DSUM, which will be more flexible. Like if you want to change the name of Salesman or the Quote Month, you need not change the formula, but only some criteria cells. Please see the link below for details...Even the criteria can be formula to copied from other sheets
http://office.microsoft.com/en-us/excel-help/dsum-function-HP010342460.aspx?CTT=1
You might consider referencing the actual date/time in the source column for Quote_Month, then you could transform your OR into a couple of ANDs, something like (assuing the date's in something I've chosen to call Quote_Date)
=SUMIFS(Quote_Value,"<=90",Quote_Date,">="&DATE(2013,11,1),Quote_Date,"<="&DATE(2013,12,31),Salesman,"=JBloggs",Days_To_Close)
(I moved the interesting conditions to the front).
This approach works here because that "OR" condition is actually specifying a date range - it might not work in other cases.
Quote_Month (Worksheet!$D:$D) contains a formula (=TEXT(Worksheet!$E:$E,"mmm-yy"))to convert a date/time number from another column into a text based month reference.
You can use OR by adding + in Sumproduct. See this
=SUMPRODUCT((Quote_Value)*(Salesman="JBloggs")*(Days_To_Close<=90)*((Quote_Month="Cond1")+(Quote_Month="Cond2")+(Quote_Month="Cond3")))
ScreenShot
Speed
SUMPRODUCT is faster than SUM arrays, i.e. having {} arrays in the SUM function. SUMIFS is 30% faster than SUMPRODUCT.
{SUM(SUMIFS({}))} vs SUMPRODUCT(SUMIFS({})) both works fine, but SUMPRODUCT feels a bit easier to write without the CTRL-SHIFT-ENTER to create the {}.
Preference
I personally prefer writing SUMPRODUCT(--(ISNUMBER(MATCH(...)))) over SUMPRODUCT(SUMIFS({})) for multiple criteria.
However, if you have a drop-down menu where you want to select specific characteristics or all, SUMPRODUCT(SUMIFS()), is the only way to go. (as for selecting "all", the value should enter in "<>" + "Whatever word you want as long as it's not part of the specific characteristics".
In order to get the formula to work place the cursor inside the formula and press ctr+shift+enter and then it will work!
With the following, it is easy to link the Cell address...
=SUM(SUMIFS(FAGLL03!$I$4:$I$1048576,FAGLL03!$A$4:$A$1048576,">="&INDIRECT("A"&ROW()),FAGLL03!$A$4:$A$1048576,"<="&INDIRECT("B"&ROW()),FAGLL03!$Q$4:$Q$1048576,E$2))
Can use address / substitute / Column functions as required to use Cell addresses in full DYNAMIC.
I have a SUM array formula that has multiple nested IF statements, making it very inefficient. My formula spans over 500 rows, but here is a simple version of it:
{=SUM(IF(IF(A1:A5>A7:A11,A1:A5,A7:A11)-A13:A17>0,
IF(A1:A5>A7:A11,A1:A5,A7:A11)-A13:A17,0))}
As you can see, the first half of the formula checks where the array is greater than zero, and if they are, it sums those in the second part of the formula.
You will notice that the same IF statement is repeated in there twice, which to me is inefficient, but is the only way I could get the correct answer.
The example data I have is as follows:
Sample Data in spreadsheet http://clients.estatemaster.net/SecureClientSite/Download/TempFiles/example.jpg
The answer should be 350 in this instance using the formula I mentioned above.
If I tried to put in a MAX statement within the array, therefore removing the test to find where it was greater than zero, so it was like this:
{=SUM(MAX(IF(B2:B6>B8:B12,B2:B6,B8:B12)-B14:B18,0))}
However, it seems like it only calculates the first row of data in each range, and it gave me the wrong answer of 70.
Does anyone know a away that I can reduce the size of the formula or make it more efficient by not needing to repeat an IF statement in there?
UPDATE
Jimmy
The MAX formula you suggested didnt actually work for all scenarios.
If i changed my sample data in rows 1 to 5 as below (showing that some of the numbers are greater than their respective cells in rows 7 to 11, while some of the numbers are lower)
Sample Data in spreadsheet http://clients.estatemaster.net/SecureClientSite/Download/TempFiles/example2.jpg
The correct answer im trying to achive is 310, however you suggested MAX formula gives an incorrect answer of 275.
Im guessing the formula needs to be an array function to give the correct answer.
Any other suggestions?
=MAX( MAX( sum(A1:A5), sum(A7:A11) ) - sum(A13:A17), 0)
A more calculation-efficient (and especially re-calculation efficient) way is to use helper columns instead of array formulae:
C1: =MAX(A1,A7)-A13
D1: =IF(C1>0,C1,0)
copy both these down 5 rows
E1: =SUM(D1:D5)
Excel will then only recalculate the formulae dependent on any changed value, rather than having to calculate all the virtual columns implied by the array formula every time any single number changes. And its doing less calculations even if you change all the numbers.
You may want to look into the VB Macro editor. In the Tools Menu, go to Macros and select Visual basic Editor. This gives a whole programming environment where you can write your own function.
VB is a simple programming language and google has all the guidebooks you need.
There, you can write a function like MySum() and have it do whatever math you really need it to, in a clear way written by yourself.
I pulled this off google, and it looks like a good guide to setting this all up.
http://office.microsoft.com/en-us/excel/HA011117011033.aspx
This seems to work:
{=SUM(IF(A1:A5>A7:A11,A1:A5-A13:A17,A7:A11-A13:A17))}
EDIT
- doesn't handle cases where subtraction ends up negative
This works - but is it more efficient???
{=SUM(IF(IF(A1:A5>A7:A11,A1:A5,A7:A11)>A13:A17,IF(A1:A5>A7:A11,A1:A5,A7:A11)-A13:A17,0))}
What about this?
=MAX(SUM(IF(A1:A5>A7:A11, A1:A5, A7:A11))-SUM(A13:A17), 0)
Edit:
Woops - Missed the throwing out negatives part. What about this? Not sure it it's faster...
=SUM((IF(A1:A5>A7:A11,IF(A1:A5>A13:A17,A1:A5,A13:A17),IF(A7:A11>A13:A17,A7:A11,A13:A17))-A13:A17))
Edit 2:
How does this perform for you?
=SUM((((A1:A5>A13:A17)+(A7:A11>A13:A17))>0)*(IF(A1:A5>A7:A11,A1:A5,A7:A11)-A13:A17))