### Value of R

10. a. Use one of the raw score formulas to find r for the following data. What is the value of r? _____ (2 Points) Case X Y 1 13 5 2 17 45 3 9 0 4 11 18 5 15 25 X-bar =13 SDx = 3.16 Y-bar =18 Sdy = 17.81 b. What does r tell us? ___________ (2 Points) Describe the strength of r. ________ (2 Points)