ABC analysis is a popular technique to understand and categorize inventories. Imagine you are handling inventory at a plant that manufactures high-end super expensive cars. Each car requires several parts (4,693 to be exact) to assemble. Some of these parts are very costly (say few thousand dollars per part), while others are cheap (50 cents per part). So how do you make sure that your inventory tracking efforts are optimized so that you waste less time on 50 cent parts & spend more time on costly ones?
This is where ABC analysis helps.
We group the parts in to 3 classes.
- Class A: High cost items. Very tight control & tracking.
- Class B: Medium cost items. Tight control & moderate tracking.
- Class C: Low cost items. No or little control & tracking.
Given a list of items (part numbers, unit costs & number of units needed for assembly), how do we automatically figure which class each item belongs to?
And how do we generate below ABC analysis chart from it?
That is what we are going to learn. So grab your inventory and follow along.
(related: ABC Analysis page on Wikipedia)
ABC Analysis using Excel – Step by step tutorial
1. Arrange the inventory data in Excel
Pull all the inventory (or parts) data in to Excel. Your data should have at least these columns.
- Part Name
- Unit cost
- # of units (if this is blank, just type 1 in all rows)
Once the data is in Excel, turn it in to a table by pressing CTRL+T. Lets call our data as inventory. You can set the table name from Design tab.
(Related: Introduction to Excel Tables)
2. Calculate extra columns needed for ABC classification
Now comes the fun part. Crunching the inventory data with formulas. Yummy!
Total Cost: This is just a multiplication of unit cost & # of units columns
Rank: We need to figure out what rank each total cost is (in the total cost column). We can use RANK formula for this.
=RANK([@[Total Cost]],[Total Cost],0) will tell us the rank for each total cost.
Cumulative Units: Once we know the rank of each item, next we need to figure out how many total units are needed for items ranked less or equal.
For example, The number (#) of the third part (PT3959-waes) is 3. Cumulative units for this is 91. This means, 91 is the total number of units for first three ranked parts (parts # 8, 9, and 16).
The formula for this is, =SUMIFS(['# Units],[Rank],"<="&[@['#]])
Remember, [@[‘#]] refers to running numbers (1,2,3….4692,4693)
Cumulative Units %: This is a percentage of cumulative units in total. The formula is simply,
=[@[c Units]]/MAX([c Units])
[Related: using structural references in Excel – video]
Cumulative Cost & Cumulative Cost %:
These are similar calculations (instead of units, we calculate cost)
Explanation of these calculations:
See below animation to understand how the numbers are crunched.
3. Create Inventory Distribution Chart
Select cumulative units & cumulative cost % columns and create an XY chart. Make sure cumulative units is on horizontal (X) axis and cumulative cost % is on vertical (Y) axis.
Our curve should look something like this.
4. Set up ABC classification thresholds
Now we need to decide what is the threshold for classes A,B & C.
For most situations, Class A tends to be top 10% of the items.
Class B would be next 20%
Class C would be the last 70%.
But these numbers may change depending on your industry, manufacturing settings.
Lets say, some where in our spreadsheet, user has defined the thresholds for the classes in a range like this:
So $O$7:$O$9 contains the thresholds.
Next to this range, calculate additional numbers (for plotting A, B & C markers and boxes) like this:
Examine the download file for exact formulas.
5. Add the ABC items & % total cost columns to chart
Add the extra data to the chart (by right clicking on chart and going to select data box & clicking “Add” button).
Once the new series is added, make sure you format it as markers only so that we get something like this.
6. Add Error bars to the ABC markers to get boxes
This step involves adding error bars to ABC marker series and customizing them.
In Excel 2013: Add error bars by clicking on the + button next to chart
In earlier versions: Do this from layout ribbon
Once error bars are added, customize them (select and press CTRL+1). Set error amount to Custom and select the calculated error values as shown below.
Once added, format the error bars to show no cap and change line color to something pleasant.
Now we have boxes on the chart.
7. Clean up the chart, add labels & titles
This is where get creative. After some clean up, we can arrive at something like this.
Download ABC Inventory Analysis Template Workbook
Click here to download ABC Inventory Analysis workbook. It contains sample data & chart. Examine the formulas & chart settings to learn more. Or if you are in a hurry, replace the sample data with your inventory details and get instant results.
Do you use ABC analysis for inventory tracking & control?
I will be honest. I have never worked as inventory controller in a super-car manufacturing plant. That said, I run a business and we do have inventory. Not physical but digital inventory. So I often use analysis like ABC or pareto to quickly figure out where I should focus my efforts.
What about you? Do you use techniques like ABC analysis to narrow down to a few items that matter most? How do you do it in Excel? Please share your tips & experiences using comments.
Add few more techniques to your inventory
Feeling low on your Excel skills inventory? Stock up with below goodies.
- Pareto Analysis in Excel – How to & tutorial
- Analyzing competition using charts – case study
- Track employee vacations & productivity [dashboard & tutorial]
- Track annual goals & achievements
66 Responses to “Budget vs. Actual Charts – 14 Charting Ideas You can Use”
[...] Update: Check out the results at Budget vs. Actual Charts [...]
Hi there:
I'm interested in understanding exactly how contestants #'s 1, 8 got their surplus or shortfall to show up at the top of the bar (is this overlapped or stacked somehow) and change colour? I hope this makes sense. I've tried to find samples and I can see contestant 8 (cuboo) may have used something called graphomate but I can't use this.
I need to create a bar chart that shows budget, and actual variance whether it be a surplus or a shortfall and I would like make it look like option 1 or 8 above but haven't a clear idea how to do it...any help would be greatly appreciated!
Regards..Linwe
[...] heute können alle Beiträge auf “Pointy Haired Dilbert” gesichtet und bis zum 12.04. bewertet werden. Falls mein Vorschlag - Nr. 8 - gefällt, freue ich [...]
Danken Sie Excel friend!
#6 is the best here. Simple, no extraneous visual effects.
I was all set to vote for #9...until I noticed its lack of y-axis labels. So I have to go with #6 also.
I think #6,#9 is enough .
#9 is my favorite
Nice data/ink ratio 😉
I agree with Jon - #6 for me.
8 & 14
I go for # 9 (simple) and #14 (complete)
I go for cuboo #8
cheers
#6 for overview at a glance / top management
#8 for deeper analysis / those who need more detailed information
#14 although I think you only need the bottom panel and I then would stack the Center charts vertically to make Center comparisons easier.
#10 gets my vote.
If there is a second place, then #14
denise
Hi, if I was not wrong, Samples 3,4 and 5 were created using Tableau software and not Excel. For more information on Tableau you might want to visit http://www.tableausoftware.com/. It was initially designed by Prof. Pat Hanrahan and his PhD students. I am not their salesperson but I thought someone might want to know more about this particular technology.
Hi Tin Seong Kam:
Thanks - I have looked at Tableau before. I have also found the means to reproduce something similar to chart 8 without using graphomate, and also chart 7. I proposed chart 9 as well but the overlap is confusing to some.
I am really not too concerned about showing actual budget figures but the variance in $ and % is important for my particular use. That is why I gravitate to the charts that seem to easily tell us that we have a surplus or a shortfall.
Thanks!
Linwe
11, 6, 9 (presque pareil)
7 pour la clarté
cuboo #8 ist my favorite
best regards...
8
8 is fantastic
I prefer N#8 - N# 1,7 & 8 use the settings of Rolf Hichert...
6 : The GURU (read "Jon Peltier ") has spoken,
SOO easy on eyes!
Hi Chandoo,
I liked Cuboo's submission. So #8 gets my vote.
Regards,
Sumit
Number 8 by far. Even though it's not part of the data display, the comments feature sells me. Variance explanations are as important as the actual variances.
I visually prefer #8, but #3 is really easier to understand, even if it lacks a lot of information (inverting budget/actual), legend, etc...
[...] All in all there are several great entries suggesting a good variety to present budget vs. actual performance. Go check them out. [...]
[...] reshape, zoo by learnr A reader of a Pointy Haired Dilbert blog enquired about best ways to visualise budget vs. actual performance. In response PHD challenged his blog readers to contribute their visualisations made using Excel or [...]
anyone willing to post their xls for these? Some really excellent exmaples.
To avoid the summary execution of the person presenting these to an executive team these charts must handle overspending as well as underspending, be comprehensible in 5 seconds and show the key fact clearly. The key fact isn't budget or actual - it's the magnitude of the gap!
Therefore:
#14 for nailing the key fact and being able to handle overspending. The winner therefore.
#6 for nailing speed-reading and being able to handle overspending, but somewhat obscuring the key fact. Second place.
#8 for nailing information depth and aesthetics. Third place.
I really wanted #8 to win, but that's the technician's view not the end-user's.
[...] Todas as contribuições podem ser vistas no seguinte endereço: Budget vs. Actual Charts – 14 Options You can Use Posted on April 5th, 2009 http://chandoo.org/wp/2009/04/05/budget-vs-actual-charts/ [...]
Social comments and analytics for this post...
This post was mentioned on Twitter by NancyJHess: I like to explore fav tweets of those I follow. Here is one from DutchDriver http://twurl.nl/17eiap Creative visual charts: Budget vs Actual...
number 8
clean, full of info, qualitative as well as quantitative
Hi,
I Like 4 chart in above as per the following ratings:-
no 1# -> 14***
no 2# -> 7***
no 3 # -> 8**
no 4# -> 1.3**
I will be greateful if someone can send me the process of making all above 4 charts.
Virender
[...] Budget vs. Actual Values in Charts – 14 more options [...]
[...] Budget vs. Actual – 14 charting options [...]
Does anyone know what type of chart #6 is (chart name?)? Also, how do I create this is Excel 2007?
@Shazbot
I'd call it a Column and Bar chart, but don't get hungup on names
To make it try this:
Setup the chart as a Clustered Column Chart
Change the Series so there is 100% overlap, ie: One column is in front of the other
Change the Budget series to a line chart
Set the line color to none
Set the marker style to a Flat Line
Change the marker width to make it the same width as the bar
Change colors and other chart properties to suit
Does anyone have an idea on how to create chart #1?
Thanks
Caroline, please see the german page: http://www.hichert.com/de/software/exceldiagramme/55
there you can find the original example for nr1.
best regards,
stefan
Caroline
This is a Clustered Stacked Column Chart
Which has the column under the Shortfall/Excess colored the same as the Budget
Have a look here
http://chandoo.org/forums/topic/question-about-budget-v-actual
&
http://peltiertech.com/WordPress/clustered-stacked-column-charts/
Hi,
Is it possible to get the source files like the other visualisation challenge (on sales).
Thanks,
Vijay
Dear Chandoo,
I discovered your site by pure chance and I am really thrilled about it and I am learning a lot.
Is it possible to post the source file for this visualisation challenge?
Thanks,
Vijay
[...] Budget vs. Actual Charts in Excel [...]
Dear Chandoo,
How do I create Chart #10 (comparing Budget vs Actual Performaces) by cost center by quarter without the cumulative performance. Do you have an actual example that I could use?
Thanks,
Greg
HI
Does anyone can help me to a to create chart #7? I'm beginer in excel , I started to work two weeks ago and my boss ask me to follow the budget/actual until the end of the year.
SO I really need your help.
Thanks in advance
p.s Sorry for my english ( i'm french)
@OKI, Greg
I have made a mockup of #7 and #10
It is available at:
http://chandoo.org/wp/wp-content/uploads/2009/04/Bud-Act-visualizaion-challenge-7+10..xlsx
#10 is a straight, Pivot Chart/Table but the data has been rearranged to get it into the pivot table
#7 is 2 charts, being a simple Bar Chart and a Scatter Chart with 100% Error Bars
I have used Named Formulas for the two charts.
HELLO Hui
Thanks you very much for your hepl , i really appreciate
Have I nice week
Hi,
I was wondering how can you replicated chart 1.3? The bars looked like there overlapped on two different axis?
Tony
I think 1 & 3 are good.
Hi Chandoo,
Please can you provide a link of the excel sheet for 1. Chart "3 colors and everything is clear"
I would like to drill into the spreadsheet and learn the secrets as how the chart was made.
Many thanks,
Sawan
@Sawan
It is probably 12 seperate charts, I will assume snapped to the underlying cells to ensure they are the same size
The left 3 Charts have a vertical Axis
The bottom 4 Charts have a horizontal Axis
The remainder have no axis
The remaining text maynot be part of the charts but is probably cell content
Saludos,
Como puedo descargar estos maravillosos ejemplos para estudiarlos y analizarlos deseo aprender a realizar este tipo de graficas en Excel.
Gracias,
Dear Chandoo and Hui,
Please would you help me (step by step if possible) to create Chart #8?
Many thanks in advance!
Dear Chandoo,
I think chart #8 is really great. Would really appreciate if you can show basic step to create it.
Thanks 🙂
Hi all,
Is there any step by step tutorial to recreate the the chart #1 please?
Would really appreciate if someone could show me how it done.
Regards
Sawan
Can someone tell me how do you create chart number 2? Thanks!
Am I the only one that can not display any of the images? Would love to take a look at these. This is the ONLY page on the whole website I have had this issue with. 🙁
Dear All,
how can i create chart # 7? is there any link where i can subscribe to your website by paying a certain amount. i want to learn some good excel techniques.
please let me know.
Cant see the images 🙁
Where can I find the link to download some of the above charts?? these are extremely usefull chart and would like to utilize the same.
Waiting for the reply.
Thanks..
I am interested for # 1,6,7,8,9,10,11 its very exciting for me .
Hi,
Just wanted to check, is there any possibility that pivot table or drop down work in power point?
Regards
Satyapal
@Satyapal... you can only use static images or slide animations in Power Point. Not features like pivot tables or drop downs. However, you can embed the entire workbook (or sheet) in a presentation. When clicked this will just open Excel so your users can play with the data.
Is there any instalment kind of facility available for joining the online course of Rs.12000/-.
Regards
Ramesh N
Hi,
I badly want to replicate #10. Can someone help me.. I've checked google to help but I can't figure out how to add the total 🙁
Regards,
Tim