Data Analytics & Business Intelligence

Patna’s professional landscape is gradually changing as businesses, institutions, and entrepreneurs adopt digital tools to improve… Continue reading on Medium »

The three clocks Flink knows about, and why picking the wrong one gives you numbers that are confidently wrong Continue reading on Towards Data Engineering »

Manually converting invoice data from PDF or Excel files into CSV format is one of the most...

How I turned messy Naver review keywords into a "workability score" for 8,000+ Seoul cafes, aggregated it by district, and published the whole thing as a free d

A beginner-to-interview-ready series on Apache Spark with PySpark and Databricks. Continue reading on Medium »

FXpeek's annual reference report for dated exchange-rate lookup, CSV exports, widgets, and lightweight JSON API workflows.

Yes, I am going back to the basics, reviewing the concept of P-value, after soullessly reading and accepting that “P-value < 0.05 as… Continue reading on Medium

Design effective completions dashboards: choose KPIs, model data for Power BI/Tableau, visualize progress, and automate distribution to stakeholders.

Your clients don’t care about your backtest. They care about whether they can understand the chart you put in front of them. Continue reading on Medium »

I still remember the first time I came across words like ANOVA, MANOVA, MANCOVA, Factor Analysis, Clustering, Logistic Regression,etc. Continue reading on Mediu

When building machine learning models to predict continuous values — like housing prices, stock trends, or supermarket clearance discounts… Continue reading on

When building machine learning models to predict continuous values — like housing prices, stock trends, or supermarket clearance discounts… Continue reading on

After a decade in operations management, I have seen countless leaders fall into the exact same trap. They build beautiful dashboards… Continue reading on Mediu

Understanding the psychology that turns dashboards into action Continue reading on Medium »

A few months ago I was cleaning up my GitHub and found this repo — https://github.com/dat-a-ish/data-gov. It was built at that weird… Continue reading on Medium

Every time I look at a job description for a Data Scientist role, the first requirement almost always scares people away: “Degree in… Continue reading on Medium

Stop expecting your algorithms to do all the work. Learn how to construct the custom features that actually boost predictive power. Continue reading on Medium »

Most JavaScript charting libraries give you chart types. Continue reading on Bootcamp »

Six APIs, six personalities. A field guide to scraping public communities politely — including the source that closed its door and what I… Continue reading on M

Can Data Science Do Without Statistics? 1. Introduction: The Debate Nobody Wants...

This post will cover Sequential A/B testing and address some of the problems that sequential A/B testing creates compared to traditional… Continue reading on Me

For decades, mortgage credit risk has been told as a story about the borrower. Credit score, debt-to-income ratio, loan-to-value, payment… Continue reading on M

Markets don’t move in straight lines — they move in regimes. Continue reading on Medium »

In this article, I explain why we at the Sentient Trading Society reject unfalsifiable cycle theories. Continue reading on InsiderFinance Wire »

Automate your data cleaning pipeline with Python. Handle duplicates, missing values, dates, and outliers.

Introduction With my Iceduck project, I’ve been diving deep into Data Lakehouse...

A few years ago I was the data engineer on a mobile game soft launch when Firebase Analytics quietly started dropping events past its 1M/day cap. We didn't catc

The Problem After losing 50 pounds on a GLP-1, I thought the hard part was over. It wasn't. The...

Data science has evolved dramatically over the last decade. Businesses once relied on static reports and historical data analysis to guide… Continue reading on

In today’s data-driven world, organizations rely on data to make informed decisions, improve business performance, and identify new… Continue reading on Medium

In this article, we’ll cover essential SQL patterns and workflows that make everyday data analysis cleaner, faster, and easier to scale.

Build real-world geospatial data skills in one weekend with hands-on Python projects and practical workflows. Continue reading on Tierra Insights »

As your data grows, a single ClickHouse server may eventually reach its limits. Whether it's storage,...

“Real data analysis starts with Python or SQL.” That’s what I believed too until I spent weeks...

 Upgrade Your Skills. Lead with AI. Continue reading on Medium »

I wanted a single screen that told me what the internet was feeling during a World Cup match — which...

Hi all, Mid–Senior Data Scientist here. I currently work in a team that develops and maintains several fairly large-scale data science projects on a self-hosted

There are plenty of useful things a metric can reveal. There are even more it can obscure or corrupt. It took me well over a decade of tracking my own life in e

xploratory Data Analysis (EDA) on the Iris Dataset Continue reading on Medium »

"Without statistics, data is just a collection of numbers. With statistics, data becomes...

Sertifikasi Microsoft Power BI menjadi salah satu kredensial yang banyak dicari oleh calon maupun profesional data analyst. Continue reading on Medium »

Power BI menjadi salah satu tools yang paling sering muncul dalam proses rekrutmen data analyst. Banyak perusahaan tidak hanya menanyakan… Continue reading on M

I Analyzed 500+ Bank Statements. Here's What I Found. Over the past few months, while...

An opening-weekend analysis through the years Continue reading on The Ugly Monster »

Most enterprise AI projects don't fail because the model is wrong. They fail because the data feeding the model is unreliable, stale, or structurally

Every equals sign is a quiet decision about what to ignore — and that decision builds the integers, the real numbers, and the surface of a… Continue reading on

A practical guide to adding embedded SQL dashboards to your SaaS product — covering architecture, authentication, multi-tenancy, and when to build vs. buy.

Wondering if a Data Science Course in Delhi is worth it for career growth in 2026? With businesses increasingly adopting Artificial… Continue reading on Medium