For a new observation of (0, 0, 0), what is the k-nearest neighbor when k = 1. Observation Y X1 X2 X3 1 Red 1 0 2 2 Blue 1 0 2 3 Blue 0 2 1 4 Red 1 2 0 5 Blue 0 -1 1 6 Blue 3 -1 2 A) 0, 2, 1 B) 1, 0, 2 C) 1, 2, 0 D) 0, -1, 1
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The Euclidean distance is calculated as the square root of the sum of the squared differences between the new observation and each existing observation. For observation 1 (Red, 1, 0, 2), the Euclidean distance is sqrt((1-0)^2 + (0-0)^2 + (2-0)^2) = sqrt(1 + 0 Show more…
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