The value of correlation coefficient should -

Correct option is C

· The correlation coefficient is a statistical measure that quantifies the degree of relationship between two variables.
· It always lies in the range of -1 to +1.
· A value of +1 indicates a perfect positive correlation (as one variable increases, the other increases proportionally).
· A value of -1 indicates a perfect negative correlation (as one variable increases, the other decreases proportionally).
· A value of 0 indicates no correlation between the variables.
· Any value outside this range (-1 to +1) is not possible.
Thus, the correct option is (c) Be between -1 and +1.