Sarah wants to look at the relationship between hours of studying and GPA. Her results indicate a positive correlation coefficient of .60. What do her results mean? (Describe it in terms of how changes in one variable are associated with changes in the second variable, do both variables go up or down, does one variable go up while the other goes down etc.) If she had found a negative correlation coefficient of -.60 what would her results mean? Is the value of +.60 a strong, moderate, or weak correlation? Is the value of -.90 a strong, moderate or weak correlation