How does your favorite US national park stack up?

May 27, 2016
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The US has almost 400 national parks, and has been keeping attendance data for about 100 years. With a holiday weekend coming up, I thought this would be a good time to crunch those numbers, and see how each park compares to all the others... I first saw the tip of

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Compute the square root matrix

May 25, 2016
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Compute the square root matrix

Children in primary school learn that every positive number has a real square root. The number x is a square root of s, if x2 = s. Did you know that matrices can also have square roots? For certain matrices S, you can find...
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Picking a surreal vacation destination in the US

May 23, 2016
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Do you need help picking a summer vacation destination - one that's not just great, but surreal? If so, this blog's for you! It's that time of the year again - I've got gobs of vacation time saved up, but I was drawing a blank on...
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How to fit a variety of logistic regression models in SAS

May 23, 2016
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SAS software can fit many different kinds of regression models. In fact a common question on the SAS Support Communities is "how do I fit a <name> regression model in SAS?" And within that category, the most frequent questions involve how to fit various...
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Why Dashboard Gauges aren’t as Bad as You Think

May 22, 2016
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Dashboard gauges were once the darling of the executive suite. Some designer took inspiration from a car dashboard and its gauges. A gauge is useful because it tells us how fast we are going or how much gas is in the tank. My newer model dashboard still has...
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Tell SAS to read a database field as CHAR instead of INT or BIGINT

May 19, 2016
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Tell SAS to read a database field as CHAR instead of INT or BIGINT

Yesterday a frustrated SAS user complained on Twitter. He's working with a database that stores an ID field as a big long number (perhaps using the database BIGINT type), and SAS can't display a number greater than 15 digits. Well, it's actually 16 digits,...
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You don’t know squat about the Las Vegas housing market

May 19, 2016
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How bad was the recent recession on the Las Vegas housing market, and what lingering side effects are still being felt? If you don't know squat about real estate housing markets, then this blog post is for you! It takes a simple graphical look...
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All I really need to know about Newton’s method I learned in primary school

May 18, 2016
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All I really need to know about Newton’s method I learned in primary school

I was eleven years old when I first saw Newton's method. No, I didn't go to a school for geniuses. I didn't even know it was Newton's method until decades later. However, in sixth grade I learned an iterative algorithm that taught me (almost)...
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Copy McCopyface and the new naming revolution

May 17, 2016
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Copy McCopyface and the new naming revolution

As a parent of children who love books, I can tell you that there is something humorous about taking a first name, adding a "Mc" and then a rhyming surname to make up a brand new character name. My daughters always loved to read...
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