If two sets of data have a correlation coefficient of 1.

Correlation Coefficient of 1.0:

A correlation coefficient measures the strength and direction of the relationship between two datasets.

A value of 1.0 indicates a perfect positive correlation, meaning the two sets of data move in the same direction proportionally.

Elimination of Other Options:

A: A value of 0 indicates no correlation.

B: Weak correlation would be closer to 0.

C: Perfect negative correlation has a value of -1.

References:

ICWIM Module 3: Concepts of statistical measures, including correlation.