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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)

11. a. Use the deviation score formula to find r for the following data. What is the value of r? ______ (2 Points)

Case X Y
1 8 4
2 13 10
3 18 35
4 16 15
5 10 0

X-bar = 13
SDx = 4.12

Y-bar = 12.80
Sdy = 13.67

b. What does r tell us? _______________ (2 Points) Describe the
strength of r. __________ (2 Points)

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The solution determines the value of R using one of the raw score formulas.

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