Split on Weight
Avg disorder = 2/8 * (- 1/2*log21/2 - 1/2*log21/2) + 3/8 * (- 2/3*log22/3 - 1/3*log21/3) + 3/8 * (- 2/3*log22/3 - 1/3*log21/3) = 0.25 + 0.69 = 0.94
Weight
Light
Average
Heavy
Sarah
Katie
Dana
Alex
Annie
Emily
John
Pete
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