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
Connect Excel to a Database with Tens of Millions of Rows?
How do you connect Excel to a databases with tens of millions of rows.. and GBs of data? Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Can a Customer Loyalty Model Predict Which Students Will Drop Out?
What happened when we borrowed a 1987 marketing model to find at-risk university students before they failed. Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Python for Data Science — Boxplots and Outlier Detection
In the previous article, we used scatter plots to explore relationships between variables. Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Python for Data Science — Scatter Plots and Relationships Between Variables
In the previous article, we learned about three fundamental chart types: Continue reading on Medium »
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Python for Data Science — Scatter Plots and Relationships Between Variables
In the previous article, we learned about three fundamental chart types: Continue reading on Medium »
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Scraping Websites With Python: The Ultimate Beginner’s Introduction
You want data from a website. There’s no download button, no API, no CSV export, just a wall of HTML. This is exactly the problem that… Continue reading on Medi
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Are You Looking for a Career Switch into Analytics?
In today’s data-driven world, businesses rely on data to make smarter decisions, improve customer experiences, and drive growth. As a… Continue reading on Mediu
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Why Your Brain Hates Pie Charts (And What to Do About It)
The psychology of visual data, the problem with angles, and why the minimalist waffle chart is the elegant solution you’ve been looking… Continue reading on Med
Reddit r/datascience
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Weekly Entering & Transitioning - Thread 22 Jun, 2026 - 29 Jun, 2026
Welcome to this week's entering & transitioning thread! This thread is for any questions about getting started, studying, or transitioning into the data sci
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
ARIMA & SARIMA: Model Statistik Klasik untuk Deret Waktu
Membongkar tiga huruf ARIMA, lalu menambahkan “indra musim” lewat SARIMA, lengkap dengan perhitungan nyata untuk menentukan p, d, q. Continue reading on Medium
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Mendelian Randomization in Clinical Epidemiology: Overcoming Confounding via Genetic Instruments
In observational epidemiology, establishing a causal relationship between a risk factor (exposure) and a clinical outcome is notoriously… Continue reading on Me
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
How to Build a Credit Scoring Grid From a Logistic Regression Model?
Turning model coefficients into a 0–1000 score, with risk classes and stability checks Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
My Drone Amputated My Fingerprint, and I Refused to Leave the Data Unanalyzed
TL;DR: My FPV drone injured me. Instead of guessing what happened, I pulled the Blackbox flight data, cracked it open with Python, and let… Continue reading on
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
My Drone Amputated My Fingerprint, and I Refused to Leave the Data Unanalyzed
TL;DR: My FPV drone injured me. Instead of guessing what happened, I pulled the Blackbox flight data, cracked it open with Python, and let… Continue reading on
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Getting Started with Exploratory Data Analysis (EDA) in Python: A Beginner’s Practical Guide
When I first started working with data, I was eager to jump straight into machine learning models and predictive analytics. Like many… Continue reading on Mediu
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Getting Started with Exploratory Data Analysis (EDA) in Python: A Beginner’s Practical Guide
When I first started working with data, I was eager to jump straight into machine learning models and predictive analytics. Like many… Continue reading on Mediu
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
3. Bölüm – İnsan Radarı
İnsanı tanımayan, hiçbir sistemi yönetemez. Continue reading on Medium »
Medium · ChatGPT
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
How I Built an Excel Dashboard With AI as My Planning Partner
AI did not magically create a perfect dashboard, but it helped me build a clearer one because it forced me to define the story first. Continue reading on The Fi
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Why Your Data Pipeline Works Perfectly… Until Real Users Arrive
The day your clean architecture met reality Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
7 Resume Bullet Transformations That Turn “Task Doer” into “Impact Owner”
A LinkedIn connection sent me his resume. He had 3 years of experience. Good company. Decent projects. Solid Python skills. Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Why You Keep Falling for Dumb Data Tricks (And How Simple Math Fixes It)
A math book made me rethink every “obvious” conclusion I’ve ever drawn — and honestly, it kind of wrecked me in a good way. Continue reading on Mr. Plan ₿ Publi
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
TournamentIQ — Intelligence System on FIFA World Cup 2026
TournamentIQ is a live intelligence system that tracks team strength using Elo Ratings. Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Data Science vs Artificial Intelligence: Understanding the Differences, Similarities, and…
Learn how Data Science and Artificial Intelligence differ in skills, responsibilities, technologies, and career opportunities Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
They Weren’t Unhappy. They Were Underpaid.
How analyzing 1,470 HR records uncovered a $13.9M retention problem and three assumptions that turned out to be completely wrong. Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Understanding the Iris Dataset Through Exploratory Data Analysis
Exploratory Data Analysis on the Iris Dataset Continue reading on Medium »
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Introduction to Pandas Series and DataFrames with Common Methods
If you work in the field of data analytics, you are probably familiar with Pandas. Pandas is a fast, flexible, and easy-to-use Python… Continue reading on Mediu
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Vertical & Horizontal Bar Chart Plotting In Python with Matplotlib
This is a simple tutorial to plot the frequencies of your data labels using python. Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Por que o Value at Risk (VaR) Falha Diante de Eventos Extremos?
Introdução Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Financial crises rarely appear out of nowhere.
Whether it’s 1929, 2008, or 2020, the underlying mechanics often follow familiar patterns: Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Databox MCP Setup Notes: Giving AI Access to Analytics Without Pretending the Metrics Are Magic
The hard part of AI analytics is usually not the chat interface. It is the setup friction around permissions, metric definitions, stale… Continue reading on Med
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Working in BI in Japan vs Europe: A Data MVP’s Perspective with Bernat Agulló Roselló (MVP)
In the world of data analytics, the journey from being an Excel power user to becoming a Microsoft Most Valuable Professional (MVP) is a… Continue reading on Me
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
The Line of Best Fit Is a Lie — It’s Actually a Choice
And understanding that choice changes how you think about every model that comes after it. Continue reading on Medium »
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
The Line of Best Fit Is a Lie — It’s Actually a Choice
And understanding that choice changes how you think about every model that comes after it. Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Backtesting Without Cheating: Bitemporal Joins, As-Of Correctness, and the Sahm Rule
Most backtest had access to a number it shouldn’t have known. Here’s how that look-ahead bias gets in, how to measure it, and how to build… Continue reading on
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Backtesting Without Cheating: Bitemporal Joins, As-Of Correctness, and the Sahm Rule
Most backtest had access to a number it shouldn’t have known. Here’s how that look-ahead bias gets in, how to measure it, and how to build… Continue reading on
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
7 Python Libraries I Wish I Had Found Years Earlier
They would’ve saved me hundreds of hours. Continue reading on Stackademic »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Python for Data Science — Line Charts, Bar Charts, and Histograms
In the previous article, we introduced Matplotlib and learned how to create basic visualizations in Python. Continue reading on Medium »
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Python for Data Science — Line Charts, Bar Charts, and Histograms
In the previous article, we introduced Matplotlib and learned how to create basic visualizations in Python. Continue reading on Medium »
Medium · Machine Learning
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Pandas vs Polars vs DuckDB 2026: I Processed 1 Million Rows in FastAPI (Pandas Crashed My RAM…
I killed a production server with a CSV file. Continue reading on Medium »
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Pandas vs Polars vs DuckDB 2026: I Processed 1 Million Rows in FastAPI (Pandas Crashed My RAM…
I killed a production server with a CSV file. Continue reading on Medium »
Medium · Machine Learning
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
The Day I Realized Web Scraping Is One of Python’s Most Underrated Skills
For a long time, I completely underestimated web scraping. Continue reading on Stackademic »
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
The Day I Realized Web Scraping Is One of Python’s Most Underrated Skills
For a long time, I completely underestimated web scraping. Continue reading on Stackademic »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Product Mix Emerged as the Primary Driver of Profitability
The bicycle retail industry operates within a highly competitive environment where profitability is influenced not only by sales volume… Continue reading on Med
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
How Data Professionals Use AI — and What Really Matters
I’ve been a data engineer for over 20 years. I started when “big data” meant a few terabytes and tuning queries by hand was half the job… Continue reading on Me
Medium · LLM
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
DiffusionGemma, Column-Level Data Lineage Engine, LLMs: The Hard Parts | Issue 93
A weekly curated update on data science and engineering topics and resources. Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Python vs R for data analysis — from a statistician’s perspective
I trained as a statistician before I became a data scientist. That order matters more than people think when choosing between these two… Continue reading on Med
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Python vs R for data analysis — from a statistician’s perspective
I trained as a statistician before I became a data scientist. That order matters more than people think when choosing between these two… Continue reading on Med
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
How Data Science Interviews Are Changing in the GenAI Era
The skills companies value today are very different from what they looked for just a few years ago. Continue reading on The Startup »
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