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Where Data Lives — CSV, JSON, APIs, and Databases Explained
What You Will Learn The four most common places data lives: files, JSON, APIs, and databases What each format looks like on the inside When yo…
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Latest Posts
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5 min
Data Types Every Analyst Must Know (Numbers, Text, Dates, Booleans)
What You Will Learn The core data types used by SQL, Python, and spreadsheets How storage type differs from analytical type (from lesson 03) W…
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5 min
Rows, Columns, Records, and Variables — The Building Blocks
What You Will Learn The vocabulary used to describe a table of data Why different fields (Excel, SQL, statistics) use different words for the…
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5 min
Qualitative vs Quantitative Data — What's the Difference?
What You Will Learn The difference between qualitative (categorical) and quantitative (numerical) data Sub-types: nominal, ordinal, discrete,…
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5 min
Structured vs Unstructured Data — With Everyday Examples
What You Will Learn The difference between structured, unstructured, and semi-structured data Why this distinction changes the tools you use R…
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5 min
What Is Data? A Beginner's First Guide
What You Will Learn What the word data actually means Why data is not the same as information How data shows up in everyday life Why every mode…