Working With Data: Upload a Spreadsheet, Get Real Analysis

⚠️ Version note. The feature that runs real analysis on your file has different names across tools and changes often. The workflow — upload, ask, verify — is stable. Last checked: 25 July 2026.

What you'll have at the end

• One real dataset (CSV or spreadsheet) analysed by AI, with charts
• The difference clear in your head between AI that computes on your data and AI that guesses
• The key figures checked by hand, so you trust the output

Prerequisite

• AI-02 — How to Use Claude (or any AI with a data-analysis / code-execution feature).
• DT-01 — Reading Data. You need mean/median/spread to sanity-check what comes back.

The one thing that separates real analysis from a plausible lie

A plain language model predicts text. If you paste numbers and ask "what's the average?", it might estimate an answer that looks right and is wrong. What you want is the mode where the AI writes and runs actual code on your file (often called data analysis, code interpreter, or advanced data) — then the numbers are computed, not guessed.

Your job: make sure it's in the computing mode, and verify anyway.