The correlation coefficient is a measure of the strength of the linear relationship between two variables and is denoted by r. Values between 0.3 and 0.7 indicate a moderate positive (negative) linear relationship .
Values between -0.3 and -0.7 indicate a moderate negative linear relationship .
The only value of r in the option is r= -0.64 lies in given interval of moderate negative linear relationship .
I believe the correct answer from the choices listed above is option C. It would be r = –0.64 that represents a moderate negative correlation. It is a <span>is a relationship between two variables in which one variable increases as the other decreases, and vice versa. Hope this answers the question. Have a nice day.</span>
