Last week, I asked my email newsletter readers to submit “one data analysis problem you are struggling with”. We called it BYOD – Bring your own data. More than 100 people have emailed various interesting (and often very difficult) problems. This week (between 16th of February to 20th of February), let’s take a look at some of these problems and solve them.
This problem is sent by Robot Mak.
Who is the most consistent of all?
Imagine you are a category manager at a large e-commerce company. Your site offers various products, but you don’t really make these products. You list products made by other vendors on your site. Every day, these vendors would send you invoices for the amount of product they have sold. Here is a snapshot of such invoices.
Looking at this list, you have a few questions.
- Who is the best seller?
- Who is the most active seller?
- Who is the most consistent seller?
- Which seller has fewest invoices?
Let’s go ahead and answer these using Excel. Shall we?
But first, what is consistency?
Consistency is the kind of word that means different things to different people. So when we analyze a set of data to find most consistent item, the first thing we need is a consistent definition of consistency.
Let’s look it up in the dictionary.
con·sis·ten·cy: Reliability or uniformity of successive results or events
The keyword is uniformity. So in our case, we can say a seller is consistent, if they are sending invoices fairly regularly.
We have 11 days of data in the data-set.
We can calculate consistency % for a seller using this:
=number of days on which invoice is sent / 11
So who would be most consistent?
Let’s say 2 sellers have sent invoices on each of those 11 days. Then who is most consistent? Both of them have consistency = 100%.
May be we can calculate weighted consistency %?
Weighted consistency?!?
Since for this e-commerce business, the most important factor is revenues (well, it should be profits, but we don’t have that data here), we can calculate weighted consistency by adding a fraction that depends on the value of total invoice amount.
Something like this:
=consistency % + (0.000001)*rank of seller based on invoice amount in ascending order
note: if your data has more than 1000 sellers, multiply with a smaller number like 0.00000001
Alternative ways to figure out weights:
Instead of revenue rank, we can use below alternatives too:
- Standard deviation of invoice amounts per day
- Standard deviation of number of invoices per day
- Rank of total invoice count in ascending order
Option 1. Using Pivot Tables
The easiest way to answer all the questions is to use Pivot Tables. Just follow below steps:
- Insert a pivot table from the invoice data.
- Then add “Date” to row label area
- Add “Seller” to column label area
- Add “value” to values area
- Just looking at the below report, we can answer questions 1 & 4
- To answer question 3 (most consistent seller), we have to see which sellers have invoices against maximum number of dates. Both SELLER2 & SELLER6 qualify. Since SELLER6 has higher amount, we can say she is most consistent (based on our definition of most consistent above)
- To answer question 2 (most active seller), replace “value” with “reference” in pivot table and find out the seller with maximum count
Option 2. Using formulas
While the pivot table approach works, it is ad-hoc. That means, we can’t extract the names of sellers automatically. We can use Excel formulas to answer all these questions elegantly.
Let’s assume all the data is in a table named sales
In your workbook, calculate all of these:
Now we just need a few doses of INDEX+MATCH formulas to answer the questions.
[Related: How to count unique values in a range? | Using SUMPRODUCT formula]
Who is the best seller?
=INDEX($H$12:$H$20,MATCH(MAX($I$12:$I$20),$I$12:$I$20,0))
Note: Column H has the seller names & I has the seller amounts
Who is the most active seller?
=INDEX($H$12:$H$20,MATCH(MAX(J12:J20),J12:J20,0))
Note: Column J has invoice count
Who is the most consistent seller?
=INDEX($H$12:$H$20,MATCH(MAX(M12:M20),M12:M20,0))
Note: Column M has weighted consistency %
Who is the seller with fewest invoices?
=INDEX($H$12:$H$20,MATCH(MIN(J12:J20),J12:J20,0))
Download Example Workbook
Click here to download example workbook with all these calculations. Examine the formulas & pivot table to learn more.
How do you measure consistency?
I will be honest. This is the first time I calculated consistency. But I find it interesting. Consistency can be used to understand your data better & make informed decisions. Few common situations where it can really help,
- Identifying consistent customers to reward them
- Finding consistent assembly line in a set of them
- Optimizing re-ordering pattern of inventories based on how consistently orders are placed
What about you? Do you measure consistency of your data? What techniques do you use? Please share your techniques & tips in the comments section.
49 Responses to “Project Management Dashboard / Project Status Report using Excel [Part 6 of 6]”
[...] display milestones Part 4: Time sheets and Resource management Issue Trackers & Risk Management Project Status Reporting – Dashboard Bonus Post: Using Burn Down Charts to Understand Project [...]
Excellent!
I was looking forward to this and you've done it again...Shame I can't claim it was all my own work 😉
ps hope you're getting enough sleep
Excelent !!! Tks to share your knowledge with us.
Izabel
Sao Paulo - Brazil
Nice job!.
I'm also keen on PM Excel Dashboards. Please, take a look at
http://screencast.com/t/TyaxH5r4mDf
That's one example of my Project control Spreadsheets.
Cheers
Hi Miguel,
Do you share your PM Excel Dashboards? It looks awesome.
Regards,
Germán
Hi M. Miguel,
Can you share your Excel Dashboards? Awesome work BTW.
Regards,
Michel Levesque
Can you share the PM excel template?
[...] haired Dilbert hat zum Abschluss einer Artikeserie zum Thema Projektmanagement mit Excel eine Anleitung zum Bau eines Projekt-Dashboards veröffentlicht. Ein Dashboard ist eine Visualisierungsform für große Mengen von meist [...]
Quite a nice and helpful article. I am sure excel is one of the most used application across many many big companies. And your info on project status update using excel would surely be usefull. Keep up the good work on this blog site. Also to share there are some open source flash-based graphing and charting solution which caould also be used on any project..
http://askwiki.blogspot.com/2009/07/how-to-create-quality-charts-using.html
@Alex, Izabel .. thank you 🙂
@Miguel: Thank you. Your dashboard looks very good. It is inclined towards the budget and finances of the project. I have kept those aspects out of this series. May be I will revisit the financial aspect of projects at a later point.
@Rishil: Thank you. Yes, you can create flash based charts (or even simple image based charts) and embed them in a project dashboard that can be published to the team using intranet (like sharepoint). This is how large companies usually do it. Thanks for sharing the Askwiki article.
Great looking dashboard!! Do you have a version for the Mac versions of Office available?
Thanks
Chandoo,
this is great piece of collating info.I liked it and shall try using it in office.
Thanks for the all hard work behind this.
Chandoo,
Kudos. This is really as simple as it gets for laymen. We did this sort of stuff in Consulting - but this can now become really simple for people. Will have my team look at this! Great work.
thanks,
Mrigank
[...] I suggest reading my 7 part series on project management using excel. Starting with Excel Gantt Charts to Project Dashboards. [...]
Just downloaded the project management template bundle...great!
Have you done anywork on a Project Portfolio Dashboard template?
@Bw... Thanks for getting a copy of the templates. 🙂 I have worked on few assignments where we built such templates. But these are similar to other regular dashboard templates. I will share some of these ideas in a later post someday. Meanwhile if you have any ideas on how to structure project portfolio dashboard, let me know using comments or email.
[...] to display milestones Time sheets and Resource management Issue Trackers & Risk Management Project Status Reporting – Dashboard Bonus Post: Using Burn Down Charts to Understand Project [...]
[...] display milestones Time sheets and Resource management Part 5: Issue Trackers & Risk Management Project Status Reporting – Dashboard Bonus Post: Using Burn Down Charts to Understand Project [...]
[...] to display milestones Time sheets and Resource management Issue Trackers & Risk Management Project Status Reporting – Dashboard Bonus Post: Using Burn Down Charts to Understand Project [...]
Thanks fro the great ideas! To get a sense of the layout and design of a Dashboard more geared toward Cost and Schedule anaysis, check out the example Dashboard at http://www.ProjectDashboards.com which was built entirely in excel.
hey,
i just need a simple Chart where by i can show some of the projects by % wise. no dates required.
1st column Project name and 2nd column will be status (filled with %). can you pls help me out.
Thanks.
@DS... if you have excel 2007, you can use data bars in conditional formatting for this purpose.
Hi Chandoo - this series is an excellent resource and tutorial, thank you for sharing.
When I sat down to consider what my dashboard should look like, one of the most important features for me is to be able to maintain version control and to show simply on what version is on display.
Apart from the naming convention of the file name, is there a good way to do this within a dashboard? I'd be interested to hear your thoughts!
@Larph: Welcome 🙂
> You can do version control thru Macros (but always remember that your audience can disable macros)
> Another option is to use a static time stamp / version number in the title page of dashboard that you update manually whenever you make changes to the file
> In excel 2010, you can keep track of file versions from File menu. This can be used to select a previous version of dashboard.
> Best option is to use a version control system like SVN or upload files to Sharepoint or something like that. This will take care of versioning for you (although it is a bit technical and dashboard audience may have difficulty figuring the versions out).
> The easiest option is to use filenames and the CELL() formula to get the version number (or date) from the filename so you can show it on the dashboard.
Hi Chandoo... I'm following you from Brazil...
I would like to thank you for the tips about excel, mainly with dashboards ... It helped me a lot …
Take care...
Di
On the dashboard when I print, the text is blanked out in the middle of the Issues list - suggestions on how to fix?
[...] Project Management Dashboard in Excel [...]
Hi Chandoo, do you have an equivalent Project Management Dashboard / Project Status Report for MS Office 2010?
As a Microsoft trainer I'm interested in your choice of Excel for project management. I'm assuming that you've tried Microsoft Project and have decided not to use it? We get folks on our MS Project courses who've tried to use Excel for PM purposes and none of them have made such an impressive project plan, but I wonder is it worth all the effort?
This looks very interesting. How may I be a part of this
Does this template work in Google Spreadsheets?
Many thanks for sharing your expertise with us. Keep up the good work 🙂
Heya i'm for the first time here. I came across this board and I to find It really helpful & it helped me out a lot. I am hoping to offer one thing again and aid others like you helped me.
Hi Chandoo,
Your PM dashboards impressed me so much that I've downloaded the Portfolio and Project Management package. All of the documents look very professional.
I was going through the Portfolio dashboard and I had a question.
When I enter in additional holidays they are highlighted in the gantt chart. Is it possible so that the name of the holiday shows up in the highlighted area of the gantt chart.
Thanks
Adam
[...] Project Status Dashboard [...]
[...] Project Status Dashboard in Excel [...]
[...] Project Management Dashboard in Excel [...]
can you confirm that the downloads will work on a mac - excel for mac v14.3.6
thanks
Made a slight variation on the schedule sheet,
1. Add a date column for start
2. In week column cell use =weeknum() and link to date cell
3. Hide week column
When you enter in a date for each task the week number is populated accordingly
simple but more effective, you can also dynamically link the date cell to your MSP project file for even more automation!!
I purchased a copy of the project management dashboard excel file. I misplaced the password to unlock the file and make modification. Can you please resend the password.
Thank much in advance...
Hi there! I just would like to give you a big thumbs up for your great info
you've got right here on this post. I'll be returning to your website
for more soon.
I bought ur project management template just want to know how to hide the budget section from portfolio?
Hi, Thanks - very good job you've prepared!
You've inspired me as well 🙂
Best regards
Hello!
I am using a gantt chart template which i got from your website. All is good just when I add all my acitivities in data spreadsheet and then go back to gantt chart to view them, I only see first 9 and then I need to keep scrolling for the next ones. is it possible to see most of the activities if not all in the single frame.
thanks for answering!
This is my first time pay a visit at here and i am actually happy to read all at alone place.
I am interested in your dashboard; downloaded the locked version, unable to use it...do you have a user guide that is available that I can see and use on the locked version?
Please send me daily newsletter
Hi,
I downloaded the PM dashboard and the gantt chart only has dates till the year 2016. How do I change this to include 2017 FY as well.
When I enter a activity for this year , it fails to show up on the chart.
Hi
Would.like to purchase the project management .kits
Pls share the payment link in INR
Also share your contact number to speak with you
Regards
Hari
9384825926