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Class 7 · Data Visualisation & Analysis

📊 Data Visualisation — turning numbers into pictures

Raw numbers are hard to read. So we organise them and turn them into a picture — a chart. The right chart helps our brain spot patterns and trends in a single glance. Play with the numbers below and watch the same data become a bar, a line, or a pie! 🎨

Playground 1 · Your report card 📋

Change your marks (out of 100), then pick a chart type. The highest and lowest subject light up.

🧠 Read a chart like a detective Always check its title, the axis labels, the values, and the legend. Bar charts compare quantities. Line graphs show how something changes over time (a trend!). Pie charts show parts of a whole. Same numbers, different story.
Playground 2 · Spot the VALID data 🎯

Each dartboard shows where someone's measurements landed. Accurate = close to the bullseye (the true value). Precise = the dots are tightly bunched. Valid data is BOTH. Click the target that shows valid data!

🤖 Why this matters in AI Charts help our brain spot patterns and trends fast — far quicker than reading a giant table. But a picture is only as good as its numbers. Clean, valid data (accurate and precise) makes the picture trustworthy. Messy data makes a pretty-but-lying chart. Good AI starts with good data! ✨
Playground 3 · Sort the data 🗃️

Some data is structured — it lives in neat rows & columns (easy for a computer to read). Other data is unstructured — it has no fixed format (photos, sounds, videos, messages). Tap an item, then drop it into the right bucket! 🪣

Score: 0 / 8 sorted ✅

Practice 🎯

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