# Calculating A Rolling Average

Oct 8, 2009
I have several worksheets with thousands rows (independent variables) and hundreds columns (all dependent variables). Each line basically gives me hundreds values for each independent variable - see below:

...

C9 39.65 653.95 5.28 163.56 99.56 14.49 ... ...

E9 7535.92 21500.56 2835.88 3122.98 7225.34 5371.25 ... ...

G9 111568 298021 12940 31645 181797 36996 ... ....

...

I need to know how the values in each row are distributed, and I ideally plot a 2D column graph of the distribution. Is there a way to do that and create/program a macro (with relative button on the workboook) that does it automatically once clicked?

Very often there are outlying values (bigger or smaller by a factor of 1000 or even more), mistakes, which I would like to identify and fix possibly

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Jun 6, 2014

What I have is a spreadsheet with a whole bunch of sporting data on it. see attachment for an idea of the layout, Stats.jpg

In these data each round a player is given a rating. What I want to do is calculate is the average rating for each player across the last 3 and 5 games they have played. When a player misses a game they get a rating of 0 for the round. I want 0 ratings to be ignored in the running averages. Additionally, games yet to be played have a 0 in the cell and should be ignored. To get overall averages ignoring 0's was simple I used the averageif function, but I couldn't figure out how to use that but only extract the last 3 non 0 values. I currently have data up to round 12, so if a player has played in 12, 11 and 10 then the 3 round average should just be the average of these 3, but if they missed for example round 11 then the 3 round average should return the average of 9, 10 and 12.

The data is set out in the following way.

In column B I have a list of player names from cells B3:B618.

Across row 1 from N1:AM1 are labels "round 1" "round 2" etc.

The ratings for each player in each round are in N-AM and from 3-618. i.e. N3:AM3 contains the weekly rating for player 1, 4 contains player 2 etc.

I would like the 3 round averages to be returned for each player in column L and 5 round averages in column M.

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Jul 30, 2013

I have a spreadsheet which has data in the format of:

Date

Sales

Monday, 8 July 2013

191

Tuesday, 9 July 2013

180

[Code] ....

I calculate the average of the last four weekdays individually with =Average(A1,A8,A14..) in a cell above them to get a four week average.

Each time I add a new weeks worth of data, I manually adjust the formula to remove the first cell, and include the latest cell with new data.

I'm looking to find out if there is a way I can automate adjusting the formula so it always grabs the last four Mondays (for example)? Either in VBA or a formula.

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Apr 19, 2009

Could you please supply a formula that will calculate a four week rolling average of column B in relation to the dates in column A? I tried using the average and offset functions but can't quite get it to calculate the correct averages.

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Mar 25, 2009

I'm looking for some help to create a rolling 12 mth average. To explain better I have added a copy of the part of the sheet to help you understand what I am working with.

What I'm looking for is the 12 mth average to show up in cell c26. I have the mths listed in cell A2-A25 and the data I want averaged is in C2-C25

An additional problems is that I only want the 12 mth avg calculated if data in the next mth is greater than zero. Meaning since this month is Mar-09 (which is already collecting data) I dont want to include Mar-09 data yet. I only want to know Mar-08 to Feb-09 average. Once data is returned to Apr-09 then I want the average to show for Apr-08 to Mar-09 and so on. I dont what is better to use vba code or a formula which ever is easier.

Or if someone has a better idea please share.

PalletsTotal Orders PickedJan-083547Feb-083031Mar-083616Apr-083472May-083562Jun-083850Jul-083293Aug-082753Sep-083821Oct-083269Nov-082920Dec-083203Jan-093072Feb-093275Mar-092902Apr-090May-090Jun-090Jul-090Aug-090Sep-090Oct-090Nov-090Dec-090Average3342TL ErrorsPercentage

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Feb 25, 2010

I have a spreadsheet that tracks “points” for hourly associates on a daily basis that totals weekly and monthly. This spreadsheet works on a rolling calendar year instead of a fiscal and I need to be able to capture the totals for periods of time by days.

For example, I would need to view how many points ‘employee x’ has from 2/25/09 through 2/25/10. I have attached the spreadsheet, which includes tabs for each week ending and a summary page.

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Jan 24, 2014

I am trying to create a formula that looks for the last populated cell, counts 12 cells back and returns an average for all of the cells in that range. I know I have done this before with some combination of INDEX and COUNT, but I can't seem to remember how I did it and my experimenting is not proving fruitful.

Attached is a simplified version of the layout I am working with

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Feb 13, 2014

Now I'm trying to do 12-month rolling average for my company data?

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Oct 7, 2008

how to calculate a six month rolling average for hours in AD column and AE column, this average would be entered in to AF1. the date column is AC the date is not consecutive it does miss days out.

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Mar 16, 2010

See Attached.

The YTD 10 column is fine that will change everytime you update each month. I was wondering if there was a formula I could use for the Rolling 12 month Column.

At the moment it is averging from Mar 09-Feb10 which is correct but when it comes to putting in data for Mar 10, the Rolling 12 month column will obviously not change.

Is there a way of moving the formula along one each time you input data into a new month. So when Mar 10 has been entered the rolling 12 month column will pick up Apr-09-Mar-10 then when Apr 10 has been entered the formula will change again to May-09-APr-10?

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Dec 7, 2006

I've got a worksheet that has chronological quarterly data for which I'd like to do a 5-year rolling average. The layout is: Column A = Dates, Column B = Values, and Column C = 5-year Rolling Average. My problem is that I want to exclude zero-values from the averaging calculation. I tried the following:

={AVERAGE(IF(B1,B5,B9,B13,B170,B1,B5,B9,B13,B17))}

However, Excel will not accept this formula (I assume an array must be contiguous? Please let me know if that's correct).

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Feb 19, 2012

I am wanting to calculate a rolling monthly average and a rolling weekly average.

The following cells have the headers k2 has Allan, Cell L2 has Bill, Cell M2 has Charlie, Cell N2 has Don, cell o2 has Ellen and Cell P2 has Flora

Column J3 to J14 respectivley has Jan to Dec

The balance of the cells will have the data.

I then need to plot the rolling averages for each person on a gaph as teh months data is filled.

Below is the table:

Monthly Totals 2012AllanBillCharlieDonEllenFloraJan0.0000.0000.0000.0000.0000.000

Feb0.0000.0000.0000.0000.0000.000Mar0.0000.0000.0000.0000.0000.000

Apr0.0000.0000.0000.0000.0000.000May0.0000.0000.0000.0000.0000.000

Jun0.0000.0000.0000.0000.0000.000Jul0.0000.0000.0000.0000.0000.000

Aug0.0000.0000.0000.0000.0000.000Sep0.0000.0000.0000.0000.0000.000

Oct0.0000.0000.0000.0000.0000.000Nov0.0000.0000.0000.0000.0000.000Dec0.0000.0000.0000.0000.0000.000

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Aug 21, 2012

I have the formula for calculating a 13 week rolling average, but I need to be able to set goals in the future and still have the average calculate from current and not from future.

I have my dates set up in row 3 (these dates are all mondays, not every day) and my data in row 4. I need the 13 week rolling average to calculate starting from the prior monday and going back 12 more mondays for the 13 weeks. IE: This monday I'm running reports that the info will be entered into the previous week's monday.

Here is the formula that I'm currently using: =AVERAGE(OFFSET(K4,,COUNT(K4:BV4)-13,,13))

The formula works but will calculate the average for 13 weeks prior based on the last cell with data in it. It's calculating the average of the last 13 weeks of next year.

how to make this work without having to remember my weekly goals every week??

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Apr 16, 2014

I am trying to create a rolling 30 day average based on a date in a particular cell. I have 62 columns that I am looking at. We can call A1 7/1/14 and the 62nd column 8/31/14 for simplicity sake. I want to grab 30 values in row 2 as these columns are filled in daily so 8/1/14 takes the average of 7/2/14-8/31. On 8/5, I want 7/6-8/4 so on and so forth. The average that I need has to include at least one averageif stating that only nonzero "<>0" figures should be tabulated (just have business day transaction data but need all dates listed to tabulate 30 days). The range of dates will be fixed every month and info copied to tabulate on the first day.

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Mar 2, 2009

I've got a "Date" Column which has every day of every month, and next to that several columns with different types of data to correspond to a particular date.

To simplify this (because there are TONS of dates), I've made another "Date" column that displays only every 5th day. Now what I'd like to do of course is average the corresponding data over five days.

I don't know how to write a single formula that I can copy down that will do this.

I've attached a sample spreadsheet with only one month's data, the stuff I need a formula / code for is in red

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Oct 9, 2009

What could be the syntax (in a code) for averaging a range in col C. the range values are given in E3 and E5. (E3=508 & E5=1200) These values changes each time I open the workbook.

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Jun 7, 2013

I have a spreadsheet that we are using as a Skills Matrix for the team. The area that the team member deals with is listed in Row 3. The scores for each person are recorded in Columns D to M. The process steps being scored against are in Rows 8 to 38, and are seperated by the area of responsibility.

I am trying to work out the average scores of each person depending on their area of responsibility. I can work out the totals easily enough using:

=IF(ISNUMBER(FIND("CM",D3)),SUM(D11,D12,D13,D14,D18,D19,D20,D23,D24,D25,D26,D27,D28,D29,D30),0)

+IF(ISNUMBER(FIND("V",D3)),SUM(D33,D34,D35,D38),0)

But if I use the same for the average scores is works fine until a person covers two duties:

=IF(ISNUMBER(FIND("CM",D3)),AVERAGE(D8:D10,D12:D17,D19:D22,D24:D30),0)

+IF(ISNUMBER(FIND("V",D3)),AVERAGE(D31:D32,D34:D37),0)

This is becuase it adds the 2 averages instead of working out the total average score. Is there an easy way around this?

i.e. For team members who have CM in Row 3 I need an average of certain cells, for team members who have V in Row 3 I need a different average and for those team members with both CM and V I need an overall average.

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Oct 1, 2013

I have a database with monthly tabs and a summary sheet, on the summary sheet I calculate an average length of stay for each month (tab) but I need to find the yearly average and I don't know if there is a formula that would calculate the true average by using the monthly averages.

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Feb 11, 2008

I have a table with 9 columns filled by a letter (A, A-, B+, etc). This letters correspond to grades (4, 3.67, 3.33, etc). The tenth column is supposed to contain the numerical average of all 9 letters in the line.

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Jul 28, 2006

I created a pivot table in which sales amounts are represented and a derived table in which market share percentages are showed. Now i am looking for a formula that is able to calculate average market share values. Depending on which country i selected in the pivot table and which category, the number of active companies are changed. How can i formulate this formula to calculate average market share percentages in a certain period. check out my attached file to clarify the situation.

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Jan 26, 2014

I am trying to calculate an average of 800 cells, where I would like to exclude a cell when a certain character is in it, namely "<".

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Jul 29, 2009

I have a set of % score values (e.g. 88%, 94%, 82%, 67%)

I would like to know if there is a relatively simple formula that can be used to calculate the AVERAGE DEVIATION from 100%, as opposed to the AVERAGE DEVIATION from the mean, which is what the excel function =AVEDEV will return.

E.g. The Average Deviation from the mean for the the above set of values is 8.25%, whereas the Average Deviation from 100% is 17.25%

I can create a complex manual formula which sums absolute values of the variation from 100% of each score, and then divides by the count total of the number of scores, however this is flawed for several reasons, including the fact it is very time consuming when used across a large set of scores, and it is corrupted when a non score exists in a cell (some of the 'scores' may be '-', in which case they should be ignored and not included in the calculation of the average deviation from 100% by treating as a 0% score (and a deviation of 100% from 100%).

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Aug 25, 2009

I have a data set that looks something like the following:

TypeAmountCost

A100$50

A200$40

A300$35

B250$40

B275$55

B500$60

A700$20

B350$25

B450$35

C400$80

C400$60

I am having trouble creating a formula that would calculate the weighted average cost depending on the type (i.e. weighted average cost of $28.84 for A, weighted avg cost of $70 for C).

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Sep 24, 2010

I am trying to calculate the average Talk Time into Minutes and Seconds. Every time I have tried, I get the wrong average.

For example, if I have a total of 53 calls and the total talk time is 4:19:05, what would the average talk per call be? I tried doing everything in seconds (this would give me a total of 15545 seconds) but the total I was getting is 4:89.

What would the formula be to get the correct average time?

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Feb 27, 2012

I have a series of numbers in the column AB56 going downwards and in AC56 going downwards their respective counts in a data-set.

What I would like to do is find the average of the min and max, the min and max for the average calculation are both determined by looking at the count column, isolating the max, isolating the min, provided they both have a count greater than zero then averaging both results.

eg.

0.1562818960

0.1558039690

0.1553260431

0.1548481172

0.15437019 2

0.1538922643

0.1534143384

0.1529364124

[code].....

In this calculation the MAX is 0.155326043 because it has a count greater than zero, the MIN would be 0.138120697 as it has a count greater than zero, the average of both would simply be 0.1467. i.e. Average(0.155326043,0.138120697)

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Feb 13, 2013

I am trying to find a way to average all the numbers placed in one cell with the answer in another.

So in cell A1

1, 2, 3, 2 or 1-2-3-2

In cell A2 would be 2. But the amount of numbers in A1 will vary from time to time.

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May 10, 2007

I have a one column of numbers...let's say consisting of six rows

the following numbers 12,0,14,25,0,9

if I average this it comes out to 10

how can I average the same rows but exclude the zeros in the outcome(is there a formula to do that?)

I would like the answer to be 15.....I still need the zero's in the rows however

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Dec 18, 2008

i have data on excel which has the following fields:

Invoice No,Inv.Date,Month,Customer,Part Number,Description,Qty.I want my final pivot table to have the following results for every part no. and description

Total monthly sales

total year sales

and for each model sale calculated as sale quantity / week

I have tried the following way but it did not work:

just next to the pivot table under the heading"AVG" i used the following formula to get the sale/week on cell o6=grand total sale /(applicable no. of weeks).and when i am copying the formula to the cells lying below the formula is being applied as that of the first cell so getting the same result for all the rows.is there a way to calculate sale/ wk within the same table

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Oct 18, 2009

I want to average the cells in column B but ignore values in the corresponding rows with a 1 or 7 in column C.

This will be used in a years data where 1 - 7 are days of the week and I want to separate weekdays from weekends when calculating an average.

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Jul 27, 2007

I need to calculate the average of values in a particular column if some other column contains a particular text. For e.g. I would like to calculate average age of all the people who belong to the Comapny "XYZ". Which means that I have two columns here one is "Age" and the other one is "Company". So For all the people who belong to the company "XYZ", I need to calculate average age.

Company Age

XYZ 24

ABC 26

ABC 34

XYZ 30

My average should be (30+24)/2 = 27.

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