Tech Skills
Data Analytics & Business Intelligence
Excel, SQL, Power BI, Tableau — turn raw data into business decisions
Skills in this topic
7 skills — Sign in to track your progress
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

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
The Sentient Trading Society Rejects Cycle-Based Technical Analysis
In this article, I explain why we at the Sentient Trading Society reject unfalsifiable cycle theories. Continue reading on InsiderFinance Wire »

Hackernoon
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
I Built an Open-Source Firebase Analytics Alternative Because I Hit 1M Events/Day Once Too Many
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
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
How Autonomous Analytics Is Changing the Future of Data Science
Data science has evolved dramatically over the last decade. Businesses once relied on static reports and historical data analysis to guide… Continue reading on

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Launch Your Career with a Data Analyst Course: The Smart Choice for Future Professionals
In today’s data-driven world, organizations rely on data to make informed decisions, improve business performance, and identify new… Continue reading on Medium

KDnuggets
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Practical SQL Tricks Every Data Scientist Should Know
In this article, we’ll cover essential SQL patterns and workflows that make everyday data analysis cleaner, faster, and easier to scale.

Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Weekend Geospatial Python Bootcamp: 4 Courses to Learn GeoPandas, Rasterio & PostGIS Fast
Build real-world geospatial data skills in one weekend with hands-on Python projects and practical workflows. Continue reading on Tierra Insights »

Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Data Analytics and AI Training | Real-Time Projects & Placement Support | Quality Thought
Upgrade Your Skills. Lead with AI. Continue reading on Medium »
Reddit r/datascience
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Ideas for testing data science workflows on self hosted Linux based HPC cluster.
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
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
EDA
xploratory Data Analysis (EDA) on the Iris Dataset Continue reading on Medium »

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
5 Kesalahan yang Sering Membuat Peserta Gagal Sertifikasi Microsoft Power BI
Sertifikasi Microsoft Power BI menjadi salah satu kredensial yang banyak dicari oleh calon maupun profesional data analyst. Continue reading on Medium »

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Skill Power BI yang Sering Diuji Saat Technical Interview Data Analyst
Power BI menjadi salah satu tools yang paling sering muncul dalam proses rekrutmen data analyst. Banyak perusahaan tidak hanya menanyakan… Continue reading on M

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Have Movies Lost Their Legs?
An opening-weekend analysis through the years Continue reading on The Ugly Monster »

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
The Overloaded Equals Sign
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

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Best Data Science Institute in Delhi with 100% Placement Assistance
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

Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Veri Bilimi Yolculuğumda Python: Temel Kavramlar ve Öğrenme Notları
Veri bilimine adım attığımda Python’un yalnızca bir programlama dili olmadığını, aynı zamanda veriyi anlamak, düzenlemek ve analiz etmek… Continue reading on Me

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Stop Writing For-Loops in Pandas: 7 Vectorized Tricks That Are Up to 7,000x Faster
I benchmarked every technique on a 200,000-row DataFrame so you don’t have to guess which one actually matters. Continue reading on Analytics Vidhya »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Your AI Analysis Looks Smart. But Does It Change the Decision?
The question is not whether your AI analysis looks intelligent. The question is whether anyone would make a better decision after reading… Continue reading on A

Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
60 Cloud Data Engineer Interview Questions You Need to Know in 2026
The ultimate technical interview guide covering SQL, PySpark, AWS, Python, Data Architecture, DevOps, and Behavioral questions — with… Continue reading on Mediu

Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Journal Figure Replication | Plotting SHAP Interaction Matrix Heatmaps with Python
SHAP Interaction Matrix Heatmaps Continue reading on Top Python Libraries »

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
From 100,000 Orders to Business Intelligence: How I Built an End-to-End Analytics System on…
What if you could see every sale, every delivery failure, every unhappy customer, and turn that chaos into a strategy? Continue reading on Medium »

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
The Peeking Problem: Why Checking Your Test Early Destroys Validity
Early peeking at A/B test results inflates false positive rates and leads to costly decisions based on noise. Learn why premature analysis… Continue reading on

Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Construindo uma base de conhecimento para explorar dados do Oracle Fusion Cloud Applications com…
Como transformar documentação espalhada do Oracle Fusion em contexto útil para ETL, data marts e consultas mais assertivas. Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Why are we ignoring the boring stuff
Whenever I get online to read or watch videos about working in data there is one thing that is very apparent, and that is: no one cares… Continue reading on Med

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
The Numbers Know Before Draft Night
Every draft season, front offices argue over the same sliver of prospects at the top. Scouts debate measurables. Agents spin narratives… Continue reading on Med

Medium · DevOps
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Apache Spark WTF??? The Spark 4 Freak Show
Welcome to the Spark 4 Freak Show — the only carnival where defaults bite, configs whisper from the walls, and the architecture finally… Continue reading on Tow
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Zero Code REST Integration for Modern HealthCare Vitals via Databricks Lakebase Data API
The friction between modern operational edge applications and core analytical data systems is a massive architectural bottleneck in… Continue reading on Medium

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
From DNA to Data: Where Biology meets Computation
I thought the Human Genome Project was all about Biology. DNA, Genes, Chromosomes — the usual suspects. Continue reading on Medium »

Medium · Machine Learning
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Why Understanding the Problem Still Matters More Than Choosing the Model
How a simple forecasting pipeline reduced electricity demand prediction errors by more than 50% using public data, interpretable models… Continue reading on Med

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Why Understanding the Problem Still Matters More Than Choosing the Model
How a simple forecasting pipeline reduced electricity demand prediction errors by more than 50% using public data, interpretable models… Continue reading on Med

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Why Data Mining Matters (And How It Actually Works)
Recently, while diving into the Data Mining module for my IT degree, my perspective completely shifted on the massive amounts of data we… Continue reading on Me

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
GridDB TimeSeries and Java Timestamps: The UTC/DST Traps That Return Empty Results
How a single timezone assumption can make your entire time-range query silently fail — and how to fix it for good. Continue reading on Medium »

Semi Analysis
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Stop Saying Half of 2026 US Datacenter Capacity Is Canceled
Don't Believe The Vibecoded Estimates, Go Through Every Individual Filing Instead

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Tips/Tricks for sports data infrastructure
Sports data is one of the most deceptively complex domains in analytics. On the surface, it looks simple — games, players, teams… Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
I Stopped Looping Through Pandas DataFrames. Everything Got Faster
Most pandas performance problems aren’t caused by Python — they’re caused by writing pandas like regular Python. Continue reading on Medium »
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
I Stopped Looping Through Pandas DataFrames. Everything Got Faster
Most pandas performance problems aren’t caused by Python — they’re caused by writing pandas like regular Python. Continue reading on Medium »

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Power BI Copilot Now Accepts 10,000-Character Prompts. That’s Not the Upgrade That Matters.
In February 2026, Microsoft raised Copilot’s input limit from 500 characters to 10K across every surface. Twenty times more room to type… Continue reading on To

Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
How We Automated SQL Alert Creation for 1000+ Databricks Tables
3–5 sets (or more) of SQL alert queries are needed to write for each Databricks table we are managing, and we have 1000+ tables in our… Continue reading on Medi

Medium · DevOps
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
How We Automated SQL Alert Creation for 1000+ Databricks Tables
3–5 sets (or more) of SQL alert queries are needed to write for each Databricks table we are managing, and we have 1000+ tables in our… Continue reading on Medi

KDnuggets
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Advanced Join Techniques: LATERAL Joins, Semi Joins, Anti Joins
LATERAL joins let a subquery in the FROM clause reference columns from earlier in the same FROM clause. Semi joins return rows where a match exists in another t

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
The Lemonade Stand That Explains Data Analytics, Data Science, ML Engineering, AI Engineering, and…
A simple story about a kid, a lemonade stand, and the five “helpers” who turned it into a tiny empire explained so clearly even a kid… Continue reading on Stack

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
When A/B Testing Fails: Choosing the Right Causal Inference Method
A/B testing is often called the gold standard of causal inference. Continue reading on Medium »

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Understanding Statistical Distributions Through One Simple Story
Disclaimer: This poster and article were created with the assistance of AI to explore a more visual and intuitive way of learning… Continue reading on Medium »

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Mindful Learning: Balancing Focus and Mental Health
In the digital age, students are constantly juggling assignments, online classes, and endless notifications. While technology has made… Continue reading on Medi

Forbes Innovation
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
A Modernized Power Grid: Why A New Approach To Utilities Planning Is Key
This shift from deterministic to probabilistic planning is a shift in mindset first and foremost.

Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
How to Open and Run Jupyter Notebooks on Android: The 4 Best Methods (2026)
A practical guide to editing and running .ipynb notebooks on your Android phone or tablet — from zero-setup apps to a full Termux server. Continue reading on Me

Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Complete Guide to Data Preprocessing for Data Science & Machine Learning
Data preprocessing is one of the most critical stages in the data science and machine learning pipeline. Continue reading on Medium »

Medium · Machine Learning
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Case Study: AI‑Powered Patient Journey & Claims Analytics for Australian Hospitals
Why Patient Journey Analytics Matters in Australian Hospitals Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Why Modern Looker Deployments Still Face Data Fragmentation Challenges in 2026
Organizations continue to invest heavily in modern Business Intelligence (BI) platforms to create a single source of truth and enable… Continue reading on Mediu
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