Author

Ryan Lekivetz
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Sr. Research Statistician Developer

I am a senior research statistician developer working on enhancing the Design of Experiments (DOE) platforms in JMP. I received my PhD in statistics from Simon Fraser University with a focus on DOE. I am constantly trying to bring my work home with me by looking for ways to apply DOE to my everyday life (some examples can be found in my previous posts below). In my spare time I collect vintage diecast vehicles and other toys from my childhood, where the collection size is restricted mainly by my ability to sneak them into the house without my wife noticing.

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Design and Analysis of Experiments 2015 conference

A long, long time ago, I was a new statistics PhD student attending my first conference. To say I was intimidated is putting it mildly: Top researchers in experimental design and analysis from around the globe were scheduled to be at this conference. How would I be able to talk

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The eggciting results of my designed eggsperiment

In my previous blog entry, I talked about my frustrations in making good-looking hard-boiled eggs that were easy to peel. My Internet searches found a number of different techniques that cooks said were essential to success, but I wanted to know which techniques were best. So I set up a

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An eggciting designed eggsperiment

A typical scene in my kitchen: I make a batch of hard-boiled eggs with the hope of an easy peel and a beautifully cooked center. But when I sit down to enjoy my egg, I find that, sadly, it’s not so easy to peel – or I have discoloration around the

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Alias Optimal versus D-optimal designs

In my previous blog entry, I discussed the purpose of the Alias Matrix in quantifying the potential bias in estimated effects due to the alias terms. In this blog post, we look at an example that creates a D-optimal design and an Alias Optimal design with the same number of

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What is an Alias Matrix?

When I create a design, the first place I typically look to evaluate the design is the Color Map On Correlations. Hopefully, I see a lot of blue, implying orthogonality between different terms. The Color Map On Correlations contains both the model terms and alias terms. If you have taken

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Creating a space-filling design for a map shape

One of my favorite new features in JMP 11 design of experiments is the Fast Flexible Filling (FFF) design in the Space Filling Design platform. When the JMP 11 Previews were released, Brad Jones showed an example of using FFF designs to place air quality monitors over the state of

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Celebrating statisticians: Karl Pearson

In celebration of the International Year of Statistics, the final statistician we celebrate is Karl Pearson. His work in the late 19th and early 20th centuries laid the structure of mathematical statistics. Born March 27, 1857, in London, England, Pearson was raised in an upper-middle class family. He studied mathematics