Interactive Decision Tree Visualization in Excel [Trump vs. Hillary in Swing States]

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It is election time in USA, and that means there is a whole lot of drama, discussions and of course data analysis. There are tons of cool visualizations published on all the data. Previously, we talked about “How Trump happened” chart.

Today let’s take a look at the beautiful decision tree chart by NY Times explaining what would happen if each of the 10 swing states vote for Democrats or Republicans. Go ahead and look at that chart. And when you are done playing with it, come back.

decision-tree-trump-hillary-nytimes

My first thought after looking at the chart is: Wow, that is cool. I wonder how we can recreate that experience in Excel?

But as you can guess, making a dynamic tree visualization in Excel is pretty hard. You can create a bubble chart mixed with XY chart to show all the nodes of the decision tree, but as this tree has 2^10 nodes at the bottom level (and 2^11-1 total nodes) our chart would look very clumsy and busy.

So, instead of replicating NY Times chart, why not make our own version that explains the data? You can reuse this idea when visualizing outcomes of several what-if scenarios.

Demo of interactive decision tree chart in Excel

First, take a look at our Trump vs Hillary chart.

interactive-decision-tree-visualization

How to create a decision tree visualization in Excel – Tutorial

 

1. Arrange decision and outcome data

In a table (or range) list various decision and outcome combinations. For our case of Trump vs. Hillary in 10 swing states, there will be 2^10 outcomes (1024). Arrange this data in a format like below.

raw-data-decision-tree

2. Calculate the outcome

Based on each of the decision combinations, calculate the outcome and add it as a column to your table. Alternatively, you can also type or import the outcome data (along with decision combinations)

3. Create a pivot table from your data

Since we are going to use slicers for user interaction, we need to create a pivot table from all this data.

Add all the decision variables and outcome to row labels area. Rearrange the pivot in tabular layout. Disable sub-totals and grand totals.

pivot-table-settings-decision-tree

4. Add slicers

Go to Insert > slicer and select all the decision parameters. In our case, we will pick all the 10 state names.

Once all the slicers are inserted, format them.

  • Set up slicer labels in multiple columns
  • Adjust their size
  • Apply a custom style if you prefer.
  • Keep the headers on the slicers for now. We will remove them at a later stage.

Related: Comprehensive guide to slicers – what, how, where, when and why

5. Calculate % of outcomes for each candidate

Now that we have slicers, whenever you make a selection, the pivot table will be filtered. Calculate number of outcomes favoring each candidate and use that to make a stacked bar chart.

stacked-bar-chart-decision-outcomes

6. Add bells & whistles

You can add a few bells and whistles to this pretty slicer controlled stacked bar chart even prettier.

  • Add messages that display %s (or confidence levels etc.) for each outcome.
  • Display the outcome once it is certain (a la head shot of Hillary or Trump)

Related: Display shapes & images in Excel charts

So there you go. Your interactive decision tree visualization is ready.

Oh, last but not least – resetting all slicers

This is the only place we need to open the hood of Excel and mess with internal wiring. Just add a simple macro to reset all slicers in the workbook. Then assign this macro to a text box with the text “Reset all” on it.


Sub resetSlicers()
    'Reset all slicers
    
    Dim sC As SlicerCache
    
    For Each sC In ActiveWorkbook.SlicerCaches
        sC.ClearManualFilter
    Next sC
    
End Sub

Download decision tree visualization workbook

Click here to download decision tree visualization example workbookPlay with the slicers to find outcome of 2016 US election. Copy the ideas to your model / dashboard to showcase outcomes based on user inputs.

Note: this workbook has VBA. Enable macros to enjoy the reset button.

How do you visualize decision trees

As I said earlier, making decision trees in Excel is tricky if not hard. If you have Power BI, you can use R scripts to make a decision tree. But if you are stuck with Excel, creating a dynamic tree like structure is tricky. That is why, I went with the stacked bar chart approach.

What about you? How would you visualize various scenarios and outcomes in Excel? Please share your thoughts and implementations in the comments section.

Want more? Check out these awesome Excel charts

Here are few more inspiring Excel charts for you.

 

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28 Responses to “FIFA Worldcup 2018 Excel Tracker – FREE Download”

  1. Andy F says:

    Good work as always - I liked the way you did the "menu" on the left hand side (although the buttons aren't lined up between tabs if I'm being ultra picky)

    Have you previously written about the method of extracting the Wikipedia page into Power Query? It's not something I recall seeing before.

    ps other geeky observsations:

    - the bracket columns are too narrow for the date & match number - and will need to be wider still when the team names get populated
    - match 51 should be Moscow (Luzhniki) for consistency
    - it's not possible to be 23 hours ahead of GMT - the International Dateline gets in the way! I think the maximum is 14. There are also a couple of countries who work to a quarter hour to make it really complicated!
    - There's a typo in the how-to - "compated" instead of compared

    • Chandoo says:

      Thanks for the lovely feedback. I have fixed almost all of them.

      1) button alignment: this is tricky as row heights can change between sheets.
      2) Column width is fixed now so bracket view looks better
      3) Updated the stadium name
      4) Did not bother with the 23 hours ahead thingie. This is more of a novelty feature 😛
      5) Fixed the type
      6) Fixed an issue with live score table. This should work as long as the points table is maintained in wikipedia page - https://en.wikipedia.org/wiki/2018_FIFA_World_Cup

      7) I have not discussed the technique of reading all tables on webpage to one big table. Watch out for a blog post on this soon.

      • Andy F says:

        Button alignment is one for the ultra-OCD sufferers 😉 There are ways, but only for those with too much time on their hands.

        • Chandoo says:

          Aah, Excel. The perfect tool for people like us. Everything (cells) is in same shape and size by default and aligned perfectly. 😀

          • Etienne says:

            Is there actually a way to copy row heights (in the same way you copy column widths?)

            By the way Chandoo, great post. I'm forwarding to my department. I actually use another query from the same page to automatically fill in the team names for the knock-out stages (I made one for round of 16 which I then duplicated and edited for quarter-finals etc.) This is incredible, I was always wondering how to do these type of queries from the web, and now I know 🙂

  2. Jake says:

    Hello!

    This is quite amazing and incredibly cool to use 🙂

    Testing the constraints of this sheets a few errors popped I noticed:
    - Vlookup Group E-H refers to column J instead of E (eg. Brazil gets the same points as Russia because the formula looks up Russia twice)
    - Power query only has 29 lines, the overview of has 32 but the 3 countries from group A are lost as the overview is refreshed - causing N/A in the group stage colums

    • Chandoo says:

      @Jake.. thank you. I am sorry for the errors. I could not test the live points table until the games began. I see my folly now. I have fixed both issues and uploaded a new file. As the points table relies on a wikipedia page, if someone decides to change the layout or rename a column it can seriously harm this template. I took some precautions in the Power Query layer to adjust column names dynamically etc, but it is not foolproof.

      Try downloading the newer version and let me know if you see something funny.

      • Jake says:

        No worries!
        Was able to fix the vlookup myself but the power query had me bit stumped 🙂 And wanted to give you a heads-up to everyone can enjoy it!

        Thanks for the awesome sheet!

  3. Darren G says:

    Hi,
    Thanks for sharing this world cup tracker. Certainly makes it more interesting when the data is current. As a newbie, it also helps to have a couple of mistakes to find whether unintentional or not.

    Thanks again

  4. Christian says:

    Hi,

    Your v-lookups in the "Group Stage" tab for groups E, F, G, and H (all the ones under column O) are pointing to the wrong country. They all point to column J, so whatever happens to the countries in column J will also be reflected for the countries in the groups in column O for that same row.
    Just thought I'd call that out. Thanks for the great work on this!

    • Chandoo says:

      @Christian... Thanks for trying this and letting me know about lookups. I have fixed the issue now. Please download latest version for that and few more fixes.

  5. Sheeloo says:

    Refresh All did not work correctly. Team names vanished though points were updated.

    • Chandoo says:

      @Sheeloo... Can you please try with latest version (download again using above links). I tested up to latest Iran's stunning win over Morocco and it works.

  6. Gsm says:

    Dear Chandoo

    Thanks a lot for this worksheet.

    However, while refreshing the data, I am getting error message as "Initialisation of Data Source failed".

    • Chandoo says:

      May I know what version of Excel you are using? Do you have internet connectivity? If you are familiar with Power Query, try tracing the steps in the query editor. And oh, first start with the latest version of file (link above).

  7. Andy F says:

    @Etienne - yes. Copy row, paste formats will do it, although obviously that will bring the formats of every cell in the row as well as the height.

  8. Rob Tsintas says:

    Latest version seems to be working well.

    One request: the Groups & Points tables on the Group Stage sheet have the team names pre-entered. This means they don't get sorted according to the results.
    On my copy, I've changed them to a lookup, so they appear in the same order as the points table. It would be good if you can do the same if/when you release a new update!

    Here's what I did. It's not the most elegant, but it works, and I didn't have much time to spend on it!

    Using helper values of 1,2,3,4 in columns I and N for each group, the formula for the first team name in group A (cell J4) is:

    =INDEX(points[Team],MATCH(OFFSET(J4,-(I4),0),points[Group],0)+(I4-1))

    This can be copied & pasted to the other team name cells.

    Cheers!

    • Chandoo says:

      Good suggestion. I have made changes to the points table to remove lookups and just show teams in the order they appear in the detailed table. This way, You will see top two teams on first two rows. We could highlight them as well (figured this would make it look like a bowl of M&Ms, so didn't bother) or highlight *YOUR* team.

  9. Paige says:

    I consider my Excel skills as above average but far from guru and I love how your little projects like this get me to look at data in a new way. I would like to expand on the data in the points table through the use of some calculations but I am a little challenged by the data coming across as text. The Pts column is easy to deal with, but I'm having problems with the GD. The negative goal differential looks like it may be noted with an en dash instead of a minus sign, but if I search for an en dash in the data Excel doesn't find any. I would like to include conversion to a minus sign in my little macro so I can get everything to numbers but so far I am not having any luck. Any thoughts? Thanks for your help.

    • Chandoo says:

      Thanks for such kind words 🙂

      I suggest adding an extra step in Power Query to convert points, GD & other columns to numbers. You can replace em dash in PQ. I did not do it as this will add another layer of dependency and should the wikipedia page change, one more reason for the query to fail.

  10. Petros says:

    As always, an awesome spreadsheet from Chandoo. I love the Power Query score update without macros. The country watch-out is a unique feature as well!

    For those who like a predictor template with flag lookup and a ribbon UI, here is our spreadsheet:

    https://www.spreadsheet1.com/fifa-world-cup-2018-russia-free-prediction-templates-for-excel.html

  11. Pranav says:

    Great template!

    I came across another one with image vlookups for country flags

    https://eexcel.co.uk/downloads (World_Cup_2018_Sweepstake.xlsx)

  12. Sean says:

    This is a great Template.
    I am running Excel 2010 with the PowerQuery add-in running.
    The scores will not update, so I followed the error and the second operation (Fitlered rows) says that the table is empty.
    After a few minutes on Wikipedia, I realise that my PowerQuery skills are not good enough to work out what the issue is.
    Any suggestions?
    I would like to fix it myself is possible.
    Thanks,
    Sean.

  13. Juan Pablo Diez says:

    Where can I see the results for a specific match?

    Thanks!

    • Chandoo says:

      @Juan... You can now. I have included a results tab that shows match scores. This too is a live table. Just refresh data to get new results. Please download latest version file from links above to use this feature.

      PS: There is another version coming soon with all goals too. I just have to spend some more time polishing the Json to table Power Query thingie.

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