Question

what does this mean tell whether x and y have a positive relationship a negative relationship or no relationship

Answer 1

In a correlation coefficient, a positive relationship means that both variables increase or decrease together. With a negative relationship, one variable increases while the other decreases. With no relationship, one variable cannot be predicted from knowing the other.

Example of a positive relationship, y = height in cm, and x = height in inches. (r = 1.00, indicating in this case, perfect predictability.)

For a negative relationship, y = golf scores and y = money won in golf tournaments. The lower the golf score, the higher the winnings.

For no relationship, compare heights of city dwellers with how many miles each drives in an average day.

I hope this helps.