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
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 »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Beyond the 80% Grind: Automated ETL and the Instant Synthetic Data Revolution
Is Your Modern Data Stack Still Running on Manual Labor? Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Master Data Analytics with AI at IDSA Janakpuri
Step into the future of analytics with the Data Analytics with AI Course at the Institute of Data Science and Analytics, Janakpuri… Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Your Hard Drive should not be the Graveyard of your Research Projects
Or why we built unpublished.pub Continue reading on Medium »
Medium · Deep Learning
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Data Analyst Salary in Kerala 2026: Skills That Increase Your Pay
Data is becoming one of the most valuable assets for businesses. From startups in Kochi to multinational companies in Thiruvananthapuram… Continue reading on Me
Medium · Machine Learning
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
SalesIQ: Building a Full-Stack Sales Analytics Dashboard with AI — A Team’s Journey
When our team sat down to plan our internship project, we knew we didn’t want to build “just another CRUD app.” We wanted something that… Continue reading on Me
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
How Data Moves: A Guide to Pipeline and Warehouse Patterns
From transactional systems to trusted analytical data products Continue reading on Level Up Coding »
Medium · LLM
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
The Readers Are Leaving Wikipedia. The Money Isn’t.
Traffic to the world’s reference library has fallen by about a quarter in three years. The cause is stranger than the headlines suggest… Continue reading on Reg
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Kesalahan yang Sering Dilakukan Pemula saat Belajar SQL dan Power BI
Di era data saat ini, SQL dan Power BI menjadi dua keterampilan yang paling banyak dicari dalam bidang analisis data. SQL digunakan untuk… Continue reading on M
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
The Brutal Truth About Becoming a Data Scientist in 2026 (And Why Python is Your Golden Ticket)
Let’s be real for a second. Aajkal har doosra insaan AI, machine learning, aur data science ki baat kar raha hai. It is easy to get… Continue reading on Medium
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
How To Always Land Data Science Interviews
Why you are not getting any callbacks Continue reading on Data Science Collective »
Medium · RAG
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Snowflake’s one-page SEC demo treats structured filings as text
Reading the Cortex one-pager, and why this is the textbook example of treating structured data as text. Continue reading on Data Science Collective »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Why I Chose Data Science Even Though I Started With Zero Experience
A year ago, if someone had asked me what Data Science was, I probably would have given a vague answer involving artificial intelligence… Continue reading on Med
Medium · Machine Learning
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
The Hidden Cost of Data Bias: Why Your Analysis Might Be More Wrong Than You Think
We live in the age of data. Every day, companies make millions of decisions backed by analysis, algorithms, and insights derived from vast… Continue reading on
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
The Hidden Order of the Landscape: Adding Uncertainty to MapServer Interpolation
What working on interpolation in MapServer taught me about maps, uncertainty, and the mathematics of the unseen. Continue reading on Medium »
Medium · Deep Learning
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
What I Wish I Knew Before Becoming a Data Scientist
When I first entered Data Science, I thought the profession was primarily about models. Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Two Identical Claims. One Got Paid. The Difference Was a Single Form
Two claims leave the billing system looking identical. Same patient, same procedure, same payer. One gets paid. The other gets denied, and… Continue reading on
Medium · Startup
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Who Owns African Data?
A Plain-English Guide to Data Sovereignty on the Continent. Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
What a Dataset Cannot Tell You
I still remember the first time I opened a large survey dataset. Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
How Data Science Is Expanding Professional Opportunities in Patna’s Evolving Job Market
Patna’s professional landscape is gradually changing as businesses, institutions, and entrepreneurs adopt digital tools to improve… Continue reading on Medium »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Event Time vs Processing Time in Flink -Why it matters more than you think
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 »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Apache Spark Mastery (Part 2 of 6): Hands-On with Databricks & DataFrames
A beginner-to-interview-ready series on Apache Spark with PySpark and Databricks. Continue reading on Medium »
Medium · Machine Learning
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Reviewing P-value
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
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
How I Build Client-Ready Investment Charts in Under 5 Minutes with Python
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 »
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Data is the New Oil. But Can You Refine It?
I still remember the first time I came across words like ANOVA, MANOVA, MANCOVA, Factor Analysis, Clustering, Logistic Regression,etc. Continue reading on Mediu
Medium · Machine Learning
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Data Science vs Retail Realities: Demystifying Regression Evaluation Metrics
When building machine learning models to predict continuous values — like housing prices, stock trends, or supermarket clearance discounts… Continue reading on
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Data Science vs Retail Realities: Demystifying Regression Evaluation Metrics
When building machine learning models to predict continuous values — like housing prices, stock trends, or supermarket clearance discounts… Continue reading on
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Beyond the Dashboard: How Tracking Actually Improves Operations
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
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Why Does Visibility Change Behavior? The Science Behind Metrics That Move People
Understanding the psychology that turns dashboards into action Continue reading on Medium »
Medium · Python
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Building a Flight Data Pipeline Without Trusting AI
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
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
My Zero-to-Hero Roadmap: How to Transition into Data Science with a Non-CS Background
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
Medium · Machine Learning
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
1. The “Creative” Angle: The Art of Data Science: A Deep Dive into Feature Construction
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 »
Medium · JavaScript
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
CanvasXpress: An Extended Grammar of Graphics Over Tidy Data
Most JavaScript charting libraries give you chart types. Continue reading on Bootcamp »
Medium · LLM
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Ingesting Hacker News, dev.to, Lobsters, Stack Exchange, and Product Hunt without getting banned
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
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
Sequential A/B Testing with Sequential Probability Ratio Test
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
Medium · Machine Learning
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
The Geography of Climate-Mortgage Risk: Why Zip Codes Matter More Than Credit Scores
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
Medium · Data Science
📊 Data Analytics & Business Intelligence
⚡ AI Lesson
2w ago
What Matters Next Week in Equities
Markets don’t move in straight lines — they move in regimes. Continue reading on Medium »
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