Statistics

An Unexpected Correlation

Difficulty
xxx \((x,x)\) xx xxxxxxx xxxxxx, xxxx xxxx xxxxxxxx xxxxxx xxxxxxxxxxxx \(x(x,x)\) xxx xxxx xxxxxxxxxxx \(\xxx=x.x\). xxxx \(xxx\) xxxxxxxxxxx xxxxx, xxx xxxxxx x xxxxxxx xxxxxx xxxxxxxxxxx xx \(x=x.x\). xx xxxx xxxxxxxxx xxxxx xxx xxxxxx xxxxx? xxxxxxxx xxx xxxxxxxxxx xxx xxxxxxxxxxx xx xxxxx xx xxxxxxxxxxx xxxxxxxxxxxxx.

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