A Science Instructor Assigns a Group of Students to Investigate

Multiple Choice

A science instructor assigns a group of students to investigate the relationship between the pH of the water of a river and its water's hardness (measured in grains) .Some students wrote these conclusions: "there was a very strong correlation of 1.35 between pH of the water and water's hardness." Is the calculation of the correlation appropriate?

A) Yes: correlation can be greater than 1.
B) Yes: the pH and the hardness of the water are data collected from the same river.
C) No: there is little or no association.
D) No: correlation cannot be greater than 1.
E) No: correlation must be equal to 1.