A correlation coefficient will always range between:
A) 0 and 1.
B) –10 and +10.
C) 0 percent and 100 percent.
D) –1.0 and +1.0.
Answer: D
Rationale: Correlation coefficients can range from –1.0 to +1.0, with –1.0 being a perfect negative correlation, +1.0 a perfect positive correlation, and 0 being no correlation.
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