Question: MacDonnell (1902) obtained measurements on seven physical characteristics for each of 300 criminals. The seven variables measured were (1) head length, (2) head breadth, (3)

MacDonnell (1902) obtained measurements on seven physical characteristics for each of 300 criminals. The seven variables measured were (1) head length, (2) head breadth, (3) face breadth, (4) left finger length, (5) left forearm length, (6) left foot length, and (7) height. The correlation matrix calculated by MacDonnell is Find the principal components of this correlation matrix and interpret the results.

1 2 3 4 5 6 7 1 234569 1.000 0.402 1.000

1 2 3 4 5 6 7 1 234569 1.000 0.402 1.000 0.396 0.618 1.000 0.301 0.150 0.321 1.000 0.305 0.135 0.289 0.846 1.000 7 0.339 0.206 0.363 0.340 0.183 0.345 0.759 0.797 1.000 0.661 0.800 0.736 1.000

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