Bohsun ChenTaming wild data with Python: Navigating through the data step-by-stepIf you’ve ever felt like your dataset was more of a wild stampede, you are not alone. Data wrangling can be chaotic, unpredictable, and…2d ago2d ago
Bohsun ChenBeyond A/B Testing: Applying Debiased/Double Machine Learning Technique and No More ConfoundersImagine you’re knee-deep in a causal inference project. The first thing that probably pops into your head is, “Let’s do some A/B testing!”…5d ago5d ago
Bohsun ChenSay Goodbye to Normality: Understanding Permutation TestsIt’s just another day of collecting a mountain of data from the database. You take a sip of your coffee and check the distribution of the…6d ago6d ago
Bohsun ChenAnalyzing the Coffee Market in Vienna City CenterVienna, often dubbed the coffee capital of the world, boasts a rich tradition of coffeehouses that blend history, culture, and a love for…Jul 7Jul 7
Bohsun ChenSmall Samples, Big Insights: Mastering Student t-TestImagine you’re a detective trying to solve a mystery with just a handful of clues. This is where the magic of the Student t-test comes…Jul 3Jul 3
Bohsun ChenUnderstanding the Chi-Squared Test: A Marketer’s Guide to Data-Driven DecisionsEver wondered how marketers can tell if a new campaign is performing significantly better than the previous one? The chi-squared test might…Jul 1Jul 1
Bohsun ChenAsymptotic Complexity — decoding Big O Notataion from the machine learning prospectiveBig O notation is an important concept that we often hear in data science and computer science. But what is it exactly?Jun 29Jun 29
Bohsun ChenAdvanced SQL JOIN Techniques: Mastering Complex Data Queries for Marketing InsightsAfter mastering the basics of SQL JOINS. In this section, I’ll explore common advanced JOIN scenarios with the combination of other SQL…Jun 14Jun 14
Bohsun ChenAcing SQL JOINs from ScratchIn the world of data analytics, SQL (Structured Query Language) is an indispensable tool. One of the most powerful features of SQL is the…Jun 14Jun 14
Bohsun ChenIs Hypothesis Testing the Hidden Gem of Statistics? Unveiling its Power and PotentialIn the vast landscape of statistics, where data-driven decisions shape our understanding of the world, one technique stands out as a hidden…Jun 13Jun 13
