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Category Archives for Math

Excel Fortune Cookie (…in bed?)

Here’s a fun little fortune cookie program. The fortunes are generated from a list of random words. I developed four different grammars for the fortunes, which you can find in the backend data. (Is “grammars” the right word? I’m not sure.) Some of the fortunes, like the one above, seem to make sense. Here are […]

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The Excel Lab: Soundex Search

Every once in a while, I have a spreadsheet that sits in my ‘lab’ for way too long. At a certain point, I have to admit that I’m never going to finish it completely or do a full blog post on it. I’ve decided just to release one such spreadsheet as is. Perhaps you will […]

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CUBE: The Rollover Method Returns! Spin a cube in a 3d environment with your mouse!

Ok, so I know I promised no more updates, but this one is too cool. Basically, I combined Andy Pope’s 3d rotation tutorial with the rollover method. The result is a free-floating cube which you can rotate by passing your mouse over it. Here’s a choppy-ish video of what’s going on. I promise however that it […]

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Easy One-Way Sensitivity Analysis on Weighted Sum Models in Excel (Part 2)

Wow, it’s been a while since my last article. I’ve actually been pretty busy the last few weeks putting the finishing touches on an Excel deliverable for one of my company’s clients. We delivered the product about a week ago and things have just now started to slow. So now it’s back to blogging. If […]

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Easy One-Way Sensitivity Analysis on Weighted Sum Models in Excel (Part 1)

This article describes what I like to call “Easy One Way Sensitivity Analysis” in Excel.  I’ve used it before in several dashboards.  If you want to try it out for yourself before reading ahead, both Healthcare dashboards on the Fun Downloads page implement my Easy One Way Sensitivity Analysis method.  Here’s a pic of one of […]

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Numbering Grouped Data for Pivot Tables

We’ve all had some experience with Excel’s automatic numbering.  For example, if you have a simple list and you would like to add consecutive numbers to a column next to your data, you’d simply select the cells containing your first two numbers and then drag accordingly.  Take a look at the sheet below to see […]

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A High Ranking Function

Excel really doesn’t have an explicit “between function” to allow users, given a set of ranges, to find in what range a selected number falls. The obvious and messy workaround is to use a bunch of nested IFs, which is tedious and error-prone. That’s where the RANK function comes in. Here’s a breakdown. RANK(number,ref,[order])number – […]

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