Comments on: Show Uncertainty in Predictions with Shaded Bands

By: Jon Peltier

Jon Peltier — Fri, 31 Jul 2009 21:37:09 +0000

Eric -

I wrote this post some time ago, so I don’t remember exactly what I did. I think I simply made up the values based roughly on the scanned image.

By: Eric

Eric — Fri, 31 Jul 2009 14:35:20 +0000

Thanks for this tutorial. One question I have is how did you come up with the worksheet calculations to determine the max, mins, and intermediates by date?

Thanks again for your insights.

-e-

By: libin

libin — Tue, 07 Apr 2009 09:05:59 +0000

It was very professional!I study a lot of things here in the past six months!
thank you very much!
a boy come from china!

By: Michel Gerday

Michel Gerday — Fri, 03 Apr 2009 11:21:45 +0000

Usual name (amonst economists) is “Fan chart”.

Here are example I made for DG ECFIN’s forecasts:
http://ec.europa.eu/economy_finance/publications/specpub_list12526.htm
http://ec.europa.eu/economy_finance/publications/publication_summary12532_en.htm

Other Fan Charts by the Bank Of England:
http://www.bankofengland.co.uk/publications/inflationreport/irfanch.htm

By: DMurphy

DMurphy — Thu, 02 Apr 2009 14:08:49 +0000

I use a similar chart in our monthly executive presentation as follows:
Every month, our business units are required to update their forecasts and we use this type of chart to try to guage accuracy. We do this by comparing the y-t-d position of Actuals against the Budget, Last Year and Forecast then extrapolate the Actual line by the variance percentages of each data “version” to arrive at what you refer to as the mid-point data. We only show a single colour for the “spread” but I like the look of what you show in your tutorial and will try it out for this quarter’s reports – thanks for the idea!!!
Here is an example: http://www.box.net/shared/pb0mnbc5k0

The data is sourced from one of our Essbase cubes and the slice of data controlled by the drop-downs at the top-left of the screen.

By: AlexJ

AlexJ — Thu, 02 Apr 2009 13:18:35 +0000

Very impressive! Should we call this a “Cat o’ Nine Tails” chart?

By: Jon Peltier

Jon Peltier — Thu, 02 Apr 2009 13:05:54 +0000

TV – Ha ha, sure, but I’d need wider bands than that!

By: Rod McInnis

Rod McInnis — Thu, 02 Apr 2009 12:54:25 +0000

That is really cool. It seems rare that I see something new to me these days. I like it.

By: TV

TV — Thu, 02 Apr 2009 12:31:55 +0000

Looks like you’re ready to predict hurricane paths.

By: Jon Peltier

Jon Peltier — Thu, 02 Apr 2009 10:45:50 +0000

Thanks, Worm, I’ve updated the article.