Are these real data sets?

They are the real shapes of real phenomena, drawn cleanly rather than plotted from exact figures · so the curve for world population really is exponential, and the one for daylight really is a seasonal bell. The point is to learn the shapes, not the precise numbers.

There is no end · you simply build the longest streak of correct guesses you can. Each correct answer extends your streak; a wrong one resets it, and your best streak is shown.

Why does a phenomenon make a particular shape?

That is exactly what the game teaches. After each round it explains the shape in a line · why population grows exponentially, why adoption follows an S-curve, why deaths rise in winter, and so on.

Will I keep seeing the same questions?

The questions are shuffled and which side shows the real curve is random each time, so a run stays fresh even over repeats.

Does it work offline?

Yes. PlayMemorize is a Progressive Web App, so Which Curve keeps working without a connection once the page has loaded.

Which Curve · spot the real graph

Two graphs, one phenomenon. One curve is the real shape it makes over time · the other is a decoy. Pick the real one.

Streak 0Best 0

World population since the year 1800

Time · People

Tap the graph you think is real.

Tip: Think about the shape the real world makes · does it grow faster and faster, peak and fall, or settle into a plateau?

Two graphs over time · pick which curve is the real shape of a phenomenon. JavaScript required.

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