Guess the CorrelationStatLens

How well can you estimate the correlation coefficient r from a scatterplot?

Round
0
Correct
0
Total
0

Drag an r value onto its scatterplot, or click to match.

Difficulty level

Match the Correlation

Match four scatterplots with their correlation coefficients. Drag r values onto plots, or click a plot then click an r value to match. Check your matches to score the round, then start a new round.

Use the difficulty selector to change the sample size behind each plot — Easy (n = 50), Medium (n = 30), or Hard (n = 15). Smaller samples are noisier, so the scatter looks less tidy and the r values are harder to tell apart.

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