Tech Skills

Data Analytics & Business Intelligence

Excel, SQL, Power BI, Tableau — turn raw data into business decisions

9,251
lessons
Skills in this topic
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Data Literacy
beginner
Write SELECT queries with JOIN and GROUP BY
Excel & Spreadsheets
beginner
Build a dynamic dashboard with pivot tables and slicers
SQL Analytics
intermediate
Write window functions (ROW_NUMBER, LAG, LEAD)
BI Tools
intermediate
Build an interactive dashboard from a SQL source
Python for Data
intermediate
Clean and transform a messy dataset with pandas
Data Storytelling
intermediate
Build a stakeholder dashboard with a narrative structure
ML for Analytics
advanced
Build a churn prediction model

Showing 254 reads from curated sources

Your Job Title Says Data Analyst. The Market Now Wants a “Context Engineer.” Here’s the Difference.
Medium · Python 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 3d ago
Your Job Title Says Data Analyst. The Market Now Wants a “Context Engineer.” Here’s the Difference.
By Harsh Gupta Continue reading on Medium »
50 Stocks, 1 Strategy, 5 Survivors but 3 Outperforms
Medium · Python 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 3d ago
50 Stocks, 1 Strategy, 5 Survivors but 3 Outperforms
A random search through the market, a simple set of rules, and the rare few stocks where they actually work Continue reading on Medium »
InfoQ AI/ML 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 3d ago
Article: Lakehouse Tower of Babel: Handling Identifier Resolution Rules Across Database Engines
Lakehouse architectures enable multiple engines to operate on shared data using open table formats such as Apache Iceberg. However, differences in SQL identifie
Isolating Outliers: How AI Dravexyron Protects Data Purity
Medium · Data Science 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 3d ago
Isolating Outliers: How AI Dravexyron Protects Data Purity
Financial markets process millions of data points every second, making occasional data glitches and isolated flash crashes entirely… Continue reading on Medium
SQL Skills Every Data Analyst Must Master in 2026
Medium · Data Science 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 3d ago
SQL Skills Every Data Analyst Must Master in 2026
If you want to build a career in Data Analytics, SQL is the one skill that never becomes outdated. But what companies expect from analysts… Continue reading on
Dev.to AI 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 3d ago
Part 8 | Boundaries, Collaboration, and Best Practices Between Apache DolphinScheduler and Flink & Spark
In the continuous evolution of data platforms, a very common yet subtle misconception is that teams unconsciously allow the scheduling system to take on more an
Medium · Data Science 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 3d ago
Shooting darts to calculate pi
It requires a bar that offers a game with half a billion darts, but it is doable Continue reading on Medium »
How to Get Zillow Data Using a REST API in 2026 (No Scraping Required)
Medium · Data Science 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 3d ago
How to Get Zillow Data Using a REST API in 2026 (No Scraping Required)
Getting property data from Zillow has always been a headache for developers. The official Zillow API was deprecated in 2021, and the… Continue reading on Medium
What Is a Context Graph — and Why Is Everyone Talking About It?
Medium · Data Science 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4d ago
What Is a Context Graph — and Why Is Everyone Talking About It?
Context graphs are emerging as the architectural layer that captures how your organization actually makes decisions — and they’re quickly… Continue reading on A
Why Your Data Work Portfolio Numbers Might Be Lying to You
Medium · Data Science 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4d ago
Why Your Data Work Portfolio Numbers Might Be Lying to You
And what a branch of statistics developed to handle messy real-world data can do about it Continue reading on Medium »
Reframing Operational Excellence in Healthcare Administration Through Data-Driven Leadership
Medium · Data Science 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4d ago
Reframing Operational Excellence in Healthcare Administration Through Data-Driven Leadership
How Ayesha Islam Asha’s Promotion to Project Manager Reflects Her Growing Impact in Healthcare Operations Continue reading on Medium »
Redefining Humanitarian Procurement and Data-Driven Supply Chain Systems at Scale
Medium · Data Science 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4d ago
Redefining Humanitarian Procurement and Data-Driven Supply Chain Systems at Scale
How Sarowar Hossain’s cross-sector expertise is shaping resilient, accountable, and technology-enabled global operations Continue reading on Medium »
Google’s 2023 Analytics Switch Left Your Yearly Baseline Looking Intact
Medium · Data Science 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4d ago
Google’s 2023 Analytics Switch Left Your Yearly Baseline Looking Intact
Google ended Universal Analytics on July 1, 2023, but GA4’s event and engagement definitions still make 2026 year-over-year budget calls… Continue reading on KA
How to Run Holdout Tests to Prove Incremental Revenue (and Stop Guessing)
Medium · Data Science 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4d ago
How to Run Holdout Tests to Prove Incremental Revenue (and Stop Guessing)
Design controlled experiments to isolate true incremental revenue and make defensible budget decisions beyond misleading ROAS. Continue reading on Medium »
Medium · Machine Learning 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4d ago
Why Your A/B Test Results Are Probably Wrong, And How CUPED Fixes It
Most A/B tests are run correctly and still produce misleading results. Not because of p-hacking, not because of bad randomization, but… Continue reading on Medi
Medium · Data Science 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4d ago
Why Your A/B Test Results Are Probably Wrong, And How CUPED Fixes It
Most A/B tests are run correctly and still produce misleading results. Not because of p-hacking, not because of bad randomization, but… Continue reading on Medi
Medium · Python 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4d ago
Why Your A/B Test Results Are Probably Wrong, And How CUPED Fixes It
Most A/B tests are run correctly and still produce misleading results. Not because of p-hacking, not because of bad randomization, but… Continue reading on Medi
The overlooked AI skill for data engineers: Git
Medium · AI 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4d ago
The overlooked AI skill for data engineers: Git
AI is speeding up data engineering. Git is what keeps it under control. Continue reading on The Slalom Blog »
The Register 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4d ago
DuckDB uses RDBMS to attack classic 'small changes' problem in lakehouses
Batching teensy changes in chunks creates massive performance boost, DuckDB Labs team claims The team behind in-process OLAP database DuckDB has put forward a s
Self-Service Data Platforms, Custom Container Images, Agentic Data Engineering, and Optimized AI…
Medium · Data Science 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4d ago
Self-Service Data Platforms, Custom Container Images, Agentic Data Engineering, and Optimized AI…
Introducing the ODSC AI East 1-Day Pass Continue reading on Medium »
Medium · Data Science 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4d ago
I kept using WHERE when I should have been using HAVING
I thought WHERE and HAVING were the same thing. They both filter data, so what’s the difference? Continue reading on Medium »
Why ARC Raiders’ Player Count Is Down 80% In 3.5 Months
Forbes Innovation 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4d ago
Why ARC Raiders’ Player Count Is Down 80% In 3.5 Months
ARC Raiders has experienced an absolutely tremendous, very fast drop in players on Steam, down from a peak concurrent player count of 466,000 in January to 90,0
Medium · Data Science 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4d ago
Crypto Data Online: Smarter Trading for Consistent Results
In today’s fast-moving crypto market, success depends on how quickly and accurately you react to changes. Many traders fail because they… Continue reading on Me
Your experimentation problem isn't tools, its how you make decisions.
Medium · Data Science 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4d ago
Your experimentation problem isn't tools, its how you make decisions.
Experimentation is not about running tests, it’s about changing how decisions are made. Continue reading on Medium »
Who Actually Runs the Game? Using Data to Find the Most Influential Player on the Pitch
Medium · Data Science 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4d ago
Who Actually Runs the Game? Using Data to Find the Most Influential Player on the Pitch
A deep Dive into passes, graphs, and neural networks — and why a player like Xavi Hernandez was basically a cheat code Continue reading on Medium »
Dev.to AI 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4d ago
We partnered with NYC broker to ground our property comps API.Here's what changed across 16 markets and 43M+ transactions
We run a property comparable-sales API. 16 markets, 45M+ transactions pulled straight from government records. NYC, Chicago, Washington DC, Chicago, Philadelphi
Dev.to AI 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4d ago
Tableau 2026 Strategy Guide: How Enterprises Are Increasing Adoption and Ending BI Fragmentation
Introduction In 2026, data-driven decision-making is no longer optional. Organizations across industries depend on analytics platforms to improve efficiency, fo
Medium · Startup 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4d ago
You Don’t Have 500K Users — You Have 500K Device IDs
Your analytics is counting devices, not people. Here’s why that matters. Continue reading on Medium »
Dev.to AI 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4d ago
Commentary: Confluent Data Streaming World Tour 2026 Mumbai
The Confluent Data Streaming World Tour 2026 in Mumbai highlighted a significant shift in how we look at and process the data. The core message was simple: if y
5 Open-Source Obsidian Alternatives That Made Me Rethink My Second Brain
Medium · Data Science 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 4d ago
5 Open-Source Obsidian Alternatives That Made Me Rethink My Second Brain
If you are a non member, this is the friend link to read this article: Continue reading on Medium »
From CSV to PostgreSQL: A High-Performance Data Migration Guide with Python
Medium · Python 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 5d ago
From CSV to PostgreSQL: A High-Performance Data Migration Guide with Python
Build a robust, scalable data pipeline using Pandas, SQLModel, and the ultra-fast uv package manager. Continue reading on Medium »
Simon Willison's Blog 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 5d ago
datasette 1.0a27
Release: datasette 1.0a27 Two major changes in this new Datasette alpha. I covered the first of those in detail yesterday - Datasette no longer uses Django-styl
Medium · Data Science 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 5d ago
Kepler Weather Station Log: Unusual DNA Match on Conduit Material
DNA linked to Kepler 186F in Continue reading on Medium »
TITLE :REAL MADRID OPPOSITION DATA ANALYST SIMULATION
Medium · Data Science 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 5d ago
TITLE :REAL MADRID OPPOSITION DATA ANALYST SIMULATION
TECHNICAL REPORT PREVIEW FOR UEFA CHAMPIONS LEAGUE QUARTER-FINAL (MALE) FOR REAL MADRID VS BAYERN MUNICH (FOCUS ON BAYERN MUNICH ) Continue reading on Medium »
The Gap Between Kaggle and Real-World Data Science
Medium · Data Science 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 5d ago
The Gap Between Kaggle and Real-World Data Science
But then you step into a real-world project — and everything changes. Continue reading on Medium »
The Gap Between Kaggle and Real-World Data Science
Medium · Python 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 5d ago
The Gap Between Kaggle and Real-World Data Science
But then you step into a real-world project — and everything changes. Continue reading on Medium »
What Makes a Data Catalog ‘Authoritative’ (and How to Earn Trust)
Medium · LLM 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 5d ago
What Makes a Data Catalog ‘Authoritative’ (and How to Earn Trust)
Conceptually explain authoritative vs certified sources and the controls that move data along that maturity curve Continue reading on Medium »
Adding Rows to Pandas DataFrames
Medium · Data Science 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 5d ago
Adding Rows to Pandas DataFrames
If you are not a Medium member, you can read the full post here. Continue reading on Medium »
Adding Rows to Pandas DataFrames
Medium · Programming 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 5d ago
Adding Rows to Pandas DataFrames
If you are not a Medium member, you can read the full post here. Continue reading on Medium »
Adding Rows to Pandas DataFrames
Medium · Python 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 5d ago
Adding Rows to Pandas DataFrames
If you are not a Medium member, you can read the full post here. Continue reading on Medium »
“Stop Rushing to Build Models — Here’s Why EDA Should Be Your First Love in Data Science”
Medium · Machine Learning 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 5d ago
“Stop Rushing to Build Models — Here’s Why EDA Should Be Your First Love in Data Science”
Let me be honest with you — when I first started learning data science, I thought EDA was just a fancy term people threw around to sound… Continue reading on Me
“Stop Rushing to Build Models — Here’s Why EDA Should Be Your First Love in Data Science”
Medium · Data Science 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 5d ago
“Stop Rushing to Build Models — Here’s Why EDA Should Be Your First Love in Data Science”
Let me be honest with you — when I first started learning data science, I thought EDA was just a fancy term people threw around to sound… Continue reading on Me
We Built Risk Adjustment Software That Deletes Codes, Not Just Adds Them. Here’s Why
Hackernoon 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 5d ago
We Built Risk Adjustment Software That Deletes Codes, Not Just Adds Them. Here’s Why
Risk adjustment software is undergoing a major shift in 2026 as DOJ enforcement and RADV audits intensify. Add-only coding models are now a liability, with pena
Building RiskLens
Medium · Python 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 5d ago
Building RiskLens
How I Engineered a Portfolio Risk Analysis System from Scratch Continue reading on Medium »
Data Analytics Career in Pakistan: Salary & Complete Roadmap (2026 Guide)
Medium · Data Science 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 5d ago
Data Analytics Career in Pakistan: Salary & Complete Roadmap (2026 Guide)
Data analytics is one of the fastest-growing and highest-paying tech careers in Pakistan right now. Continue reading on Write A Catalyst »
Medium · Data Science 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 5d ago
Auto - Data Analyst: AI-Powered Automation
Every data-driven organization faces a familiar bottleneck: highly skilled teams spend countless hours on repetitive data cleaning… Continue reading on Medium »
The Register 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 5d ago
US states can't account for datacenter tax breaks. Literally
Report says authorities are flouting accounting rules by failing to disclose revenue lost to server farm subsidies Many US states and local authorities are viol
Does Load Management Actually Prevent Injuries in the NBA?
Medium · Data Science 📊 Data Analytics & Business Intelligence ⚡ AI Lesson 5d ago
Does Load Management Actually Prevent Injuries in the NBA?
We built a dataset of five seasons, tracked every time a star sat out, and ran a survival model to find out whether rest days are really… Continue reading on Me