The data below comprises of the number of hours (X) studied and the exam grade (Y) obtained for 6 first year students registered at UWC. Calculate the correlation coefficient (rounded off to two decimals). X 2 5 1 2 3 3 Y (%) 60 85 73 80 90 87 SSxy = 42.33 SSx = 9.33 SSy = 618.83 = 2.6667 = 79.1667 b = 4.5357 A. 0.3102 B. 0.5570 C. -0.9865 D. 0.0073
The data below comprises of the number of hours (X) studied and the exam grade (Y) obtained for 6 first year students registered at UWC. Calculate the correlation coefficient (rounded off to two decimals). X 2 5 1 2 3 3 Y (%) 60 85 73 80 90 87 SSxy = 42.33 SSx = 9.33 SSy = 618.83 = 2.6667 = 79.1667 b = 4.5357 A. 0.3102 B. 0.5570 C. -0.9865 D. 0.0073
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter1: Functions
Section1.2: The Least Square Line
Problem 7E
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Question
The data below comprises of the number of hours (X) studied and the exam grade (Y) obtained for 6 first year students registered at UWC. Calculate the
X |
2 |
5 |
1 |
2 |
3 |
3 |
Y (%) |
60 |
85 |
73 |
80 |
90 |
87 |
SSxy = 42.33 |
SSx = 9.33 |
SSy = 618.83 |
= 2.6667 |
= 79.1667 |
b = 4.5357 |
- A.
0.3102
- B.
0.5570
- C.
-0.9865
- D.
0.0073
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