Chapter 9 Answers

Chapter 9 Answers - 7 a Yes X Y = b r = 0 c The relationship is not linear 8 No r stays the same 9 The first and third have the same correlation

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Chapter 9 Answers 1. X = A +1, Y = B , r = 0.400 2. X = A , Y = 2 B , r = 0.400 3. X = C -4, Y = 0.5 D +1, r = -0.707 4. X = 3 C -2, Y = 2 D +3, r = -0.707 5. X = 2 A +1, Y = B -4, r = 0.400 6. a) X Average= 40 X SD = 20 Y Average = -7 Y SD = 4 r = -0.400 b) X Average= 50 X SD = 28.9 Y Average = -5.83 Y SD = 4.49 r = 0.244
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Unformatted text preview: 7. a) Yes, X Y = . b) r = 0 c) The relationship is not linear. 8. No, r stays the same. 9. The first and third have the same correlation coefficient. 10. The first and second have the same correlation coefficient....
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This note was uploaded on 04/07/2008 for the course MATH 1680 taught by Professor Patton during the Spring '08 term at North Texas.

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