BENEDICTINE UNIVERSITY

If there is no correlation, r2 is equal to zero. Correlation coefficient, r, the square root of r2--positive or negative, depending on. the type of correlation--range -1 to +1. Note: ρ (rho) and ρ2 are the population parameters corresponding to r and r2. Correlation and causation. The presence of correlation does not, in itself, prove that x ... ................
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