Which property is true for the correlation coefficient ρ(X,Y)\rho(X, Y)ρ(X,Y)?
−1≤ρ≤1-1 \le \rho \le 1−1≤ρ≤1
0≤ρ≤10 \le \rho \le 10≤ρ≤1
ρ≥0\rho \ge 0ρ≥0
ρ\rhoρ can be any real number