The correlation coefficient Quiz

Name: ______________________   Date: __________   Score: ____ / 10

10 questions. Calculator allowed. Show your working. steplyclass.com/statistics/the-correlation-coefficient/quiz/

1. 1

   Correlation coefficient of (1, 2) (2, 4) (3, 6) (4, 8) (5, 10)
   1. A) r = 20
   2. B) r = 120
   3. C) r = 3
   4. D) r = 1

2. 2

   Correlation coefficient of (1, 9) (3, 6) (5, 4) (7, 1)

   Answer: ____________________

3. 3

   Correlation coefficient of (1, 2) (2, 4) (3, 5) (4, 4) (5, 10)
   1. A) r ≈ 360
   2. B) r ≈ 0.843
   3. C) 0.044
   4. D) r ≈ 3

4. 4

   Correlation coefficient of (1, 5) (2, 4) (3, 6) (4, 3) (5, 7)

   Answer: ____________________

5. 5

   Correlation coefficient of (1, 4) (3, 5) (5, 9) (7, 8) (9, 14)
   1. A) 0.019
   2. B) r ≈ 0.924
   3. C) r ≈ 2480
   4. D) r ≈ 5

6. 6

   Correlation coefficient of (10, 20) (20, 30) (30, 25) (40, 45)

   Answer: ____________________

7. 7

   Correlation coefficient of (3, 7) (5, 4) (7, 6) (9, 3)
   1. A) r ≈ 200
   2. B) r ≈ 5
   3. C) r ≈ −0.707
   4. D) r ≈ −0.05

8. 8

   Correlation coefficient of (1, 12) (2, 10) (3, 11) (5, 7) (6, 6) (7, 2)

   Answer: ____________________

9. 9

   Correlation coefficient of (5, 60) (10, 70) (15, 65) (20, 85) (25, 95)
   1. A) 0.002
   2. B) r ≈ 0.922
   3. C) r ≈ 212500
   4. D) r ≈ 15

10. 10

    Correlation coefficient of (2, 3) (3, 6) (5, 4) (6, 9) (9, 8)

    Answer: ____________________