Which of the following correlations would be an acceptable way to show that the variable (Pi) is a suitable proxy for Ai in the regression Yi = ?0 + ?1Ti + ?2Ai + Ui?

A. pCorr(Yi, Pi; Ti) ? 0
B. Corr(Yi, Ti) ? 0
C. spCorr(Yi, Ti (Pi)) ? 0
D. None of the answers is correct.


Answer: D

Biology & Microbiology

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