Close Window   
Free Ebook
Get Your Free Excel
Our Top 15 Excel Tutorials
Instant Access!
Excel Forum

Calculating A Geometric Mean With Some Negative Values

Forum Register
Search Excel Forum Posts, Tutorials, Macros, Tips, and More

I am trying to work out how to calculate the geometric mean of a series of values, some of which are negative, ie. investment returns over a series of years with some negatives.

The Geomean function doesn't work because it only uses positive numbers.

Any help would be greatly appreciated.

View Answers     

Similar Excel Tutorials

Make Negative Numbers Positive in Excel and Vice Versa
I will show you a few ways to change negative numbers to positive numbers and back again in Excel. Don't forget to ...
Make All Numbers in a List Positive in Excel
Take a list of numbers and make them all positive, regardless of whether the list contains a mixed set of positive ...
PMT Function - Get the Payment Due for a Loan in Excel
How to calculate the payment amount for a loan or similar financial instrument that has a series of constant paymen ...
NPER Function - Calculate Number of Periods Needed for a Set of Payments in Excel
How to calculate the number of periods required for an investment in order to get the desired return.  The number o ...
Round Numbers Up or Down in Excel
How to round a number up or down and also to a specified number of decimal places in Excel.  This will allow you to ...
FV Function - Get the Future Value in Excel
The Future Value function (FV) in Excel will return the future value of an investment based on a particular intere ...

Helpful Excel Macros

Get the Number(s) Out of a Cell that Contains Both Text and Numbers in Excel - UDF
- This free Excel UDF allows you to get the numbers out of a cell that contain both text and numbers. This is a great fun
Generate a Non-Repeating List of Random Numbers in Excel - UDF
- Generate a series of non-repeating random numbers in Excel with this UDF (user defined function). This is a great funct
Replace Formulas with Values (For The Entire Workbook)
- This macro will convert every formula in an entire workbook into its respective value. This is basically a quick way to
Calculate the Future Value (FV) of Compound Interest in Excel - UDF Macro
- This UDF (user defined function) calculates the Future Value of Compound Interest in Excel. The mathematical formula th
Get Values from a Chart
- This macro will pull the values from a chart in excel and list those values on another spreadsheet. This will get the s

Similar Topics

Hi folks,

Hoping someone can help me quickly as I'm pulling my hair out and have a deadline getting too close.

Been trailing the net and this board but can't work out how to do a simple variance.

How do I work out the difference between two numbers - including negatives.

If the numbers are all positive, it's fine as it's simply a case of A - B = C which is your difference. However, that doesn't work if B is negative.

I need a formula that would give the following:

First Number / Second Number / Difference
1 / 5 / 4
1 / -5 / -6
-1 / 5 / 6
-1 / -5 / -4
-5 / -1 / 4

Hopefully there's a simple function I've been missing.

Thanks in advance, R

So I've got some data, which has the approximate form of a sine function. I want to find all the x-axis intercepts. I tried using the intercept function and swapping around the y values for the x values, but it only returns 1 value (so I'd guess it uses a linear regression to estimate a single line through the axis).

I was thinking of trying a nested if/and statement but I haven't quite figured out how to do it. Basically I want to identify the two values where it switches from positive to negative and also indentify the values where it goes negative to positive, I can then fit a straight line between them to find a better approximation of the intercept (though it might not be necessary). Preferably I'd like it all one function as I'm not doing it in VBA (I might do later though, we'll see).

Can anyone suggest how I'd find these value or the x-intercept. Any help would be greatly appreciated.

Hi there. I know it sound like a really simple thing but its really stumped me.

Instead of the y axis being on the left hand side, i wish for it to cut at 0,0. I have positive and negative values and I need it to be in the centre instead of on the left.

I have tried formatting both the axis and it would appear that the x axis already cuts the y axis in the right posistion so i need to format the x axis to make the y axis cut it at 0,0. I have already tried typing in 0 instead of 1 and it keeps saying it need to be number more than or equal to 1.

Any help would be greatly appreciated.


I want to create 6 numbers from 11 numbers..
lets suppose my numbers a 1,2,3,4,5,6,7,8,9,10,11
I want to generate all possibilities of the 6 numbers. But i dont want duplicate series.. I mean 1,2,3,4,5,6 and 6,5,4,3,2,1 are duplicates.


I have a spreadsheet where I need to calculate the increase in % one year over the other in column D for Eg if Profits are 95415 in Jan 2008 (Column B) and 80215 in Jan 2008 (Column C), then the % Increase will be (95415-80215)/80215 *100

I can calculate the formula for this , but the problem comes where for eg there is a loss in Jan 2008 for -95415 and there was a profit in Jan 2007 for 80215. How do I set up formula to take negatives & positives into account in calculating the increase or decrease/

Your assistance or anybody's on the forum will be greatly appreciated



I have cells in a column, some colored yellow, some not. I am trying to use
the SUMIF function to sum only the cells in the range that are colored. Can
this be done? Can I enter something in the "criteria" part of the formula
that can do this?


I also tried to use the CELL function's color feature, but I couldn't get it
to work right. I don't know how to get Excel to recognize if a cell is
colored in a formula.

It might just be that I don't know what this means in Help:

"color" --> 1 if the cell is formatted in color for negative values;
otherwise returns 0 (zero).

Can anyone help?

I need a formula to calculate overtime, after a work week of 40 hours.

for example: if an employee works 10 hours a day we would not count towards overtime until the employee completes a 40 hour work week.

Any suggestions would be greatly appreciated!!!!!



I'm a bit of a newbie with Excel, but...

I have several cells with data that contain both letters and numbers (4H, 8V, 4FH, etc.) What I want to do is remove only the text characters from these cells, and add the remaining number values together among a series of cells with this data type.

If your answer involves using a macro or VB, please provide a link on how to use the formula. I've never used a macro or VB.


Here's my formula... =SUM(S7)-T5

If that number is less than -100, I want it to show as blank.

Any help?

Right now, I'm trying to accomplish this by making a conditional format...meaning when my cell equals less than -100 I make the cell color and font the same (so it looks blank, but its not). When I print it, it still shows the negative value.


Entering time values in custom format [h]:mm:ss
Cells accept hours over 23,
Adding cells in column returns correct total time.
Have not found a way to multiply these cells by a $ hourly rate.
So use HOUR(cell ref) and MINUTE(cell ref) to capture values in referenced
cell - then use these values to calculate total payment for $rate per hour.
However, the HOUR(cell ref) formula returns the hours in excess of 24 when
the cell contains an hour value in excess of 23 (ie 27 hours returns 3).

I have a pivot chart with a bunch of data series, and every time we
include/exclude one of the series to see how the chart changes, all the
colors change and we have to spend time re-identifying which series is
which, using the legend to check the colors.

Is there a way to "lock" the colors, so that the bars stay the same colors
regardless of whether other bars are included/excluded?


How can I calculate a 3% anual rent increase over 15 years (3% over the last year's rent)?

Hello from sunny Madrid

I have created a complex formula to help me calculating Golf handicaps for players.

The formula is in the first cell and I want to drag the formula across to the right to cover the 18 holes.

But ALL the values change and I want some to change and some to stay constant.

How do I tell excel to drag the formula across but keep certain parts of the formula the ....=D11.... in the formula when dragged across doesn't go D12,D13;D14 in each cells formula and should stay as D11 for all.

Many thanks for your help


I have a spreadsheet set up with an employees information, including the start date. After each year that the employee is working, he gets bumped up on the pay scale. For this reason, I only need to know how many years the employee has been working, rounded down to the nearest year.

This is what I have so far (hire date is in column B):

=((TODAY()-B4)/365)&" YEARS"

This function gives me a number with many decimal places.

I tried:

=ROUNDDOWN((TODAY()-B4)/365),0)&" YEARS"

It tells me I have too few arguments. Please help!

I have the strangest problem... somehow, right clicking a cell doesn't
bring up a menu anymore. It happens only when I'm in Excel only... it still
works even if I bring up macro editor within Excel... it only doesn't work
when I'm in Excel. I've tried Options and Customize... nothing there seems
to work...


I have two columns of data: column A contains the date and time in the form dd/mm/yyyy. Column B contains a number value. All the times are in order, so column A looks like:


I have data from 2007 to 2010. I need to calculate an average daily value (in column B) for each month, and display it in column C. So, for January, I need to calculate the average of 31 days, February, 28 days, etc.

Is there a function I can use to do this? I've been trying the AVERAGEIF formula but can't get it to work. Any ideas would be much appreciated!

Many thanks,

Column 1 has roughly 20 rows of information. Cell C1 has the formula =A1.

Is there a formula so that when I drag C1 horizontally into D1, E1, F1, ..., the values placed in each cell will be =A2, =A3, =A4, ...

I do not want to transpose the values from column 1 into C1, D1,.... I want these cells to have a formula that links them up to column 1's values


Hi there

I am trying to calculate our On Time Delivery. I want this as a simple percentage of jobs. I have got this running in the following way:

Column M - Estimated Delivery dates
Column N - Actual Delivery dates
Column O - =IF(SUM(M2-N2)>0,1,0)

Then I have calculated On Time Delivery as: =SUM((SUM(O2:O252))/(COUNTA(N2:N252)))

This seems to work fine. My problem is, if we enter a date in Estimated without a corresponding Actual date, the formula for Column O fills out anyway and improves our On Time Delivery Percentage. How can I set this up so that the formula doesn't calculate if there is no data in Column N?

Any help much appreciated



I have a sheet with a list of names on and I've noticed that when I use ctrl+F to use the find function, even when I know i have entered the correct name it still will not work. I have identifed times when I know the name is there on the sheet, but the find function says "Excel cannot find the data you are searching for"

Im unable to put any pics up as my work pc has java disable so photobucket ect won't work but has anyone else come across this problem and how did you rectify it? A search macro perhaps?


I am brand new to Mr. Excel and would love some advice.

I searched the boards pretty extensively but could not find what I am looking for...I apologize if this is a duplicate.

I am using Excel 2007

How do you automatically add rows and update values for cells to a linked worksheet in which rows have been added? For example: Sheet 1, columns A & B are linked to Sheet 2, columns A & B. Sheet 2 has values in A1:A5 & B1:B5 and Sheet 1, since it is linked, has the same info. I want to add a row in between 3 & 4 on Sheet 2 and want Sheet 1 to automatically add the same row and update the value of the cell in column A & B.

Any help is greatly appreciated!


Great tip! But one thing: On my machine (Excel 2008 Mac), the values in the formula cell are not correctly calculated simply by dragging. Instead, the values are equal to the cell above (the first entry formula value). To get the correct value, I need to click in the formula bar and then hit enter. (I only discovered this after an hour of tinkering, figuring I had botched the formula!)

Are there any ways around this so that it updates upon dragging the formula?

This formula is supposed to calculate difference between today and date hired to give years and months of service. Works fine for all except if the person was hired in year 2000 then this formula shows 110 y. Any one know how to fix this? or have a different formula that works.

=DATEDIF(E21,TODAY(),"y")&" y "&DATEDIF(E21,TODAY(),"ym")&" m"


Regarding Charts in Excel:

Is there a way to have the Min and Max values adjusted dynamically for the Scale of the values being displayed ??

I know that I can use named ranges to display various sections of data -- month by month, or quarter by quarter, for example.

But when the value of these ranges vary greatly from section to section I end of having to manually go and adjust the Min and Max values of the chart scale.

For example, if I was looking at a graph of the S&P 500's prices last November, a Min and Max range of 750 to 1200 would be fine. But if I had a dynamic range established and scrolled over to view the S&P 500's prices for this past February, I would need a Min and Max range of around 650 to 850.

Is there a way to have these Min & Max values adjust automatically depending on the values being displayed ??




I have three columns containing last name values from 3 different sources that I've brought into one sheet. I am trying to find a way to compare all three values to establish if they are the same.

Of the three values there is no master, Each value may be different. So essentially it would be like doing =IF(a1=a2=a3,"match", "nomatch")
But of course this isn't possible.

I don't care about obtaining detail about which value matches which. I just need true or false response as to whether all three values are the same or not.

Thanks for any help anyone can provide.


Right now I have a sports league with 8 teams, I'd like to create a random 7-game schedule where each team plays the other team only once. Essentially this will be a 7-game round robin. However, I'd like to be able to use this for any number of teams and games.

I'd like to do this in Excel, but I can't figure out how to have a randomly generating non-repeating macro with text values in cells.

So right now I have a column of 8 values and need matrix of 7 columns by 8 rows next to it.

I've found this thread that has one for numbers, but I can't figure out how to do it for text values...

Thanks all!