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How Type I Error, Confidence Intervals, Type II Error, and Power Are All Related | by Andreas Martinson | Nov, 2022

Comparing normal distributions and their metricsImage by authorA fundamental part of statistics depends on normal distributions, which makes sense considering almost all distributions converge to a normal distribution due to the central limit theorem.If you have taken a statistics 101 course, you should be familiar with a t-test and know that it compares two normal distributions to each other. However, you might not have gone into depth about the 4 metrics I cover down below (and especially how they’re visualized) since…

What I’ve Learned After Using Git Daily for 6 Months | by Andreas Martinson | Aug, 2022

I think I ‘Git’ itPhoto by Chris Linnett on UnsplashThis article is for those who are starting to learn Git, aspire to learn Git, or have used Git but don’t use it actively. I used to be in the ‘used Git but don’t use it actively’ group.Learning Git can seem daunting. Hopefully this list of the Git commands I’ve learned in the past 6 months will make this seem like an easier task. You can think of these as a sort of bare minimum list of Git commands that you can learn to feel confident that you know enough to contribute…

How to Simplify Hypothesis Testing for Linear Regression in Python | by Andreas Martinson | Jul, 2022

StatisticsWhat is homoscedasticity again?Photo by Edward Howell on UnsplashI find myself coming back to the basics to refresh my statistical knowledge over and over again. Most people’s first introduction to statistics begins by learning hypothesis testing, which is followed soon after by t-tests and linear regression. This article is a refresher of how to use linear regression for hypothesis testing along with the assumptions that have to be satisfied in order to trust the results of your linear regression statistical…

How Writing SQL Could Get a Whole Lot Easier With NLQ | by Andreas Martinson | May, 2022

Machine LearningNatural Language Querying Will Change Your Data Career for the BetterPhoto by Monica Silvestre on PexelsWhat is the most intuitive, efficient, and least mentally draining way to ask a question? It is using the simplest words possible in your own language. Modern search engines such as Google has made searching for information online using simple sentences commonplace. This had helped create our modern society and improved access to information globally; it’s hard to overstate how transformational the…