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Pearson's (r) Limitations

This activity explores two limits of the Pearson"s product-moment correlation coefficient (PPMCC), r : Slide for presenting the key ideas are at the bottom of this page. It"s important students have explored the applets and Tasks 1 to 3 below for themselves first.(a) Enter the below data in your Graphics Display Calculator (GDC), plot it as a scatter graph, and discuss with your group what functions you think could fit...

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