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
4w ago
Exploratory Data Analysis (EDA) Best Practices: A Step-by-Step Framework Using Modern Visualization…
Before building a machine learning model, before writing a single line of predictive code, there is a step that separates mediocre data… Continue reading on Med

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
I will convert pdf to word, scanned image to word or google docs
I am very proficient in using (MS Word), (MS Excel), and (Adobe Acrobat) to convert pdf to Word or google docs. I am creative and fast… Continue reading on Medi

Medium · Startup
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
Cookies Are Dying. Your Analytics Shouldn’t Die With Them.
If you run a website, you’ve probably noticed the slow unraveling of the old analytics playbook. Cookie consent banners annoy visitors, ad… Continue reading on

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
Elevate Your Career with Data Analytics + Gen AI
Step into the future of analytics with the Data Analytics with Gen AI course at the Institute of Data Science and Analytics, Janakpuri… Continue reading on Medi

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
How to Learn SQL for Data Analysis
SQL is one of the most practical skills in data science. If Python helps you analyze data, SQL helps you reach the data in the first place. Continue reading on

Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
Two Beautiful Ideas the Market Already Killed
“Free” arbitrage and the bot that read the weather. Two flawless hypotheses on paper, two lessons in why efficient markets give you… Continue reading on Medium

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
Top Monte Carlo Data Observability Alternatives in 2026
How to tackle Data Observability outside of Monte Carlo in 2026 Continue reading on Medium »

Medium · Machine Learning
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
The Strangest Data Science News of 2024 (That No One Is Talking About)
Three counterintuitive discoveries that will change how you think about models, data, and scaling Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
Your Database Has Two Jobs.
A plain-language breakdown of data modeling, OLAP, and OLTP and why mixing them up will cost you. Continue reading on Medium »

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
AWR (Automatic Workload Repository) — Oracle Performance Monitoring Tool | 002
AWR (Automatic Workload Repository) — Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
Why 90% of Data Science Beginners Fail in 2026 (And How to Actually Get Hired)
Industry realities, high-paying skills, aur sahi roadmap jo har fresher ko pata hona chahiye. Continue reading on Medium »
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
Why 90% of Data Science Beginners Fail in 2026 (And How to Actually Get Hired)
Industry realities, high-paying skills, aur sahi roadmap jo har fresher ko pata hona chahiye. Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
Best Data Science Course in Almora — Advanced Training
In today’s digital world, businesses kind of rely heavily on data, to make smarter decisions and so on. From healthcare and finance, all… Continue reading on Me

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
Why Time Zone Offsets vs.
Daylight saving rules make time zone regions outperform fixed offsets Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
MCP is “dead” — or is it?
Today, I want to talk about how I’m saving anywhere from like 60% to 90% of my tokens for tool calling. And the solution is actually dead… Continue reading on M
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
Why Smart Students Are Learning Data Engineering Before They Graduate
A few years ago, getting a degree was enough to start a career. Continue reading on Medium »

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
Most Companies Do Not Need Another Chatbot
They need their documents converted into decision-ready intelligence. Continue reading on Medium »

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
The Best Money Making Intraday Trading Strategy
Most traders spend their time looking for the perfect entry. Continue reading on Medium »

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
“Proper Principles Provide Practical Practice & Proficiency”
5-P’s Without Needing To Harm Anyone Continue reading on Medium »

Medium · Machine Learning
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
10 SQL Techniques for Reducing Unnecessary Full Table Scans and Query Execution Time
Optimizer-focused strategies that eliminate costly scans, improve index usage, and dramatically reduce query latency at scale Continue reading on Medium »
Reddit r/datascience
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
What is the biggest challenge you face in data science projects?
Is it data quality, stakeholder expectations, model deployment, business understanding, or something else? submitted by /u/Effective_Ocelot_445 [link] <a href="

Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
Claude Code Hooks: When CLAUDE.md Stops Being Enough
It doesn’t take long for a .claude/CLAUDE.md to grow unwieldy. Continue reading on Data Science Collective »

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
External Validity Threats: Why Your A/B Test Results Might Not Generalize
Discover the external validity threats that can invalidate your A/B test results, from seasonality and sample pollution to the flicker… Continue reading on Medi
Medium · Machine Learning
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
Goal Analytics, Fully Built: Data Pipeline, Six Models, and a Real Backtest
Module 1 is done. Here’s everything that’s actually in the system now, how it’s validated, and what’s next. Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
The Golden Ball Deserves a Formula: A Data-Driven Take on Football’s Most Debated Award
By Sunday Ikpe and Femi Akinmade Continue reading on Medium »

Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
Spark Joy: How I Cut 100M Record Processing from 4.5 Minutes to 76 Seconds
My first professional love was data. Anything to do with data. I found it so interesting that everything in any system ever boiled down to… Continue reading on

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
Creating a Power BI Dashboard for Nigerian Retail Sales Analysis
This project is based on a Nigerian Retail Sales dataset that contains a large amount of raw data, which on its own does not tell a clear… Continue reading on M

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
So, You Need a Data Management and Sharing Plan..
The NIH continues to tweek the requirements for the Data Management and Sharing Plan, here’s what it looks like in 2026 Continue reading on MetaScientific »

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
Creating a Power BI Dashboard for Nigerian Retail Sales Analysis
Using Power BI to uncover sales trends, regional performance, and profitability inisight from a Nigerian Retail Dataset. Continue reading on Medium »

Medium · Machine Learning
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
Building data-lens: What I Learned Shipping a Self-Hosted Data Explorer from Scratch
There’s a particular kind of frustration that comes from working with data in 2026. You have a CSV. Maybe it’s sales records, maybe it’s… Continue reading on Me

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
Building data-lens: What I Learned Shipping a Self-Hosted Data Explorer from Scratch
There’s a particular kind of frustration that comes from working with data in 2026. You have a CSV. Maybe it’s sales records, maybe it’s… Continue reading on Me

Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
Building data-lens: What I Learned Shipping a Self-Hosted Data Explorer from Scratch
There’s a particular kind of frustration that comes from working with data in 2026. You have a CSV. Maybe it’s sales records, maybe it’s… Continue reading on Me

Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
20% of Customers Generate 43% of Revenue. Here’s What the Data Says
I ran an RFM analysis on 17,000 e-commerce transactions from a Turkish online retailer. The results were eye-opening. Continue reading on Medium »

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
Modelo de Stackelberg: Quando Quem Move Primeiro Vence
Série: Modelos Matemáticos para Data-Driven Decision Making — Step 07 / 12 Continue reading on Medium »

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
Databricks Connect: Run Spark Code from Your Local IDE on a Remote Cluster
If you’ve ever worked with Spark, you know the usual workflow: write code, upload it to a notebook, run it on the cluster, debug through… Continue reading on Me

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
Introducing PRISM: A New NBA Impact Metric
Blending regularized adjusted plus-minus with possession-level box production. Continue reading on Medium »

Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
Optimizing Specific Power Consumption (kWh/T) in an Open Circuit Cement Ball Mill Using Data &…
Grinding consumes 30–40% of cement plant electricity. Learn how to cut kWh/T by 8–15% using Python data analytics. Free code + GitHub repo… Continue reading on

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
My Data Science Internship Journey at Oasis Infobyte (OIBSIP)
Learning Through Experience Continue reading on Medium »

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
Apache SeaTunnel Monthly Engineering Digest (May 2026): 87 PRs, Stronger Connectors, Smarter…
Hello SeaTunnel community! Continue reading on Medium »

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
Building My First Power BI Dashboard for E-Commerce Sales Analysis
Uncovering payment behaviour, regional trends, and product performance from Nigerian retail sales data Continue reading on Medium »

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
Why a Coin Toss Contains More Information Than a Sunrise
Understanding entropy through surprise, probability, and uncertainty. Continue reading on Medium »

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
US Unemployment Is 4.3%.
US unemployment is 4.3%. The curve even looks like it is calming down. The data underneath says otherwise. 2 million Americans have now… Continue reading on Med

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
There Is No Modern Playbook for This.
There is no modern playbook for this. US core inflation — the gauge the Fed targets at 2% — is at 3.3% and re-accelerating. Outside Covid… Continue reading on M
Reddit r/datascience
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
I've interviewed with 100+ companies during my career. Here are some high-level notes on DS/ML job hunting
This is my job search framework, the approach I follow every time I look for a new job. I want to cover mindset, preparation, finding jobs and applying, plus th

Hackernoon
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
Graph Clustering for Entity Resolution: Why Union-Find Breaks at Web Scale
Union-Find is fast, but it breaks for real-world entity resolution because it cannot handle safeguards, reversals, or ambiguous matches. A weighted graph approa
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
Why AI Web Scraping Is Becoming Essential for Modern Businesses
In a world where information changes by the minute, businesses need more than just access to data — they need access to the right data at… Continue reading on M

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
How will you handle missing data in a dataset?
Missing data is a common problem in Data Science and can affect the accuracy and reliability of analysis and machine learning models… Continue reading on Medium

Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
4w ago
Apache Spark: The Complete Deep Dive
Architecture · Internals · Join Strategies · Catalyst & Tungsten · AQE · Memory Management · Performance Tuning · Spark 4.0 Continue reading on Medium »
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