Articles by ntguardian

Grades Aren’t Normal

July 30, 2019 | ntguardian

Grades are not Normally distributed. That's not what's seen naturally in grades and the idea is not supported by statistics. You can force grades to look Normally distributed, but doing so has costs.
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Organizing R Research Projects: CPAT, A Case Study

February 4, 2019 | ntguardian

Introduction Months ago, I asked a question to the community: how should I organize my R research projects? After writing that post, doing some reading, then putting a plan in practice, I now have my own answer. First, some background. In the early months of 2016 I began a research project ... [Read more...]

Time Series and MCHT

November 12, 2018 | ntguardian

Introduction Over the past few weeks I’ve published articles about my new package, MCHT, starting with an introduction, a further technical discussion, demonstrating maximized Monte Carlo (MMC) hypothesis testing, bootstrap hypothesis testing, and last week I showed how to handle multi-sample and multivariate data. This is the final article ...
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Beyond Univariate, Single-Sample Data with MCHT

November 5, 2018 | ntguardian

Introduction I’ve spent the past few weeks writing about MCHT, my new package for Monte Carlo and bootstrap hypothesis testing. After discussing how to use MCHT safely, I discussed how to use it for maximized Monte Carlo (MMC) testing, then bootstrap testing. One may think I’ve said all ...
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Bootstrap Testing with MCHT

October 29, 2018 | ntguardian

Introduction Now that we’ve seen MCHT basics, how to make MCHTest() objects self-contained, and maximized Monte Carlo (MMC) testing with MCHT, let’s now talk about bootstrap testing. Not much is different when we’re doing bootstrap testing; the main difference is that the replicates used to generate test ...
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Maximized Monte Carlo Testing with MCHT

October 22, 2018 | ntguardian

Introduction I introduced MCHT two weeks ago and presented it as a package for Monte Carlo and boostrap hypothesis testing. Last week, I delved into important technical details and showed how to make self-contained MCHTest objects that don’t suffer side effects from changes in the global namespace. In this ...
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Naïve Numerical Sums in R

September 10, 2018 | ntguardian

Introduction The Kolmogorov distribution (which I call ) is as follows: There is no known simpler form and we have to work with this sum as it is. This is an infinite sum. How can we compute the value of this infinite sum numerically? Naïvely we can do the following: ...
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How Should I Organize My R Research Projects?

August 2, 2018 | ntguardian

While I understand the languages I need well enough, I don't know much about programming best practices. This goes from function naming to code organization, along with all the tools others created to manage projects (git, make, ctabs, etc.). For short scripts and blog posts, this is fine. Even for ... [Read more...]
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