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Scatter graphs and correlation

8th grade (Year 9 in England) · 16 questions · Common Core: 8.SP.A.1, 8.SP.A.2, 8.SP.A.3 · England: KS3 Statistics, GCSE Foundation Statistics

Name

Date

Score/ 16

  1. Question 1

    The line of best fit for hours studied (x) and test score (y) is y = 3x + 5. Predict the score for 6 hours of study.

    xy246810121481624324048566472800y = 3x + 5

    Answer

  2. Question 2

    Ava plotted two measurements for 8 plants in a scatter graph. What type of correlation does it show?

    xy24681024681012140(1, 9)(2, 4)(3, 10)(4, 3)(5, 8)(6, 5)(7, 6)(8, 2)
    • A. Positive
    • B. Negative
    • C. No correlation

  3. Question 3

    The line of best fit for hours studied (x) and test score (y) is y = 3x + 7. Predict the score for 8 hours of study.

    xy246810121481624324048566472800y = 3x + 7

    Answer

  4. Question 4

    Ana plotted two measurements for 8 plants in a scatter graph. What type of correlation does it show?

    xy24681024681012140(1, 5)(2, 6)(3, 2)(4, 9)(5, 4)(6, 10)(7, 3)(8, 8)
    • A. Positive
    • B. Negative
    • C. No correlation

  5. Question 5

    The line of best fit for hours studied (x) and test score (y) is y = 3x + 9. Predict the score for 11 hours of study.

    xy246810121481624324048566472800y = 3x + 9

    Answer

  6. Question 6

    Sofia plotted two measurements for 8 plants in a scatter graph. What type of correlation does it show?

    xy24681024681012140(1, 10)(2, 9)(3, 7)(4, 6)(5, 7)(6, 4)(7, 5)(8, 2)
    • A. Positive
    • B. Negative
    • C. No correlation

  7. Question 7

    The line of best fit for hours studied (x) and test score (y) is y = 2x + 10. Predict the score for 7 hours of study.

    xy246810121481624324048566472800y = 2x + 10

    Answer

  8. Question 8

    Luis plotted two measurements for 8 plants in a scatter graph. What type of correlation does it show?

    xy24681024681012140(1, 11)(2, 10)(3, 9)(4, 8)(5, 5)(6, 5)(7, 5)(8, 3)
    • A. Positive
    • B. Negative
    • C. No correlation

  9. Question 9

    The line of best fit for hours studied (x) and test score (y) is y = 5x + 9. Predict the score for 6 hours of study.

    xy246810121481624324048566472800y = 5x + 9

    Answer

  10. Question 10

    Nia plotted two measurements for 8 plants in a scatter graph. What type of correlation does it show?

    xy24681024681012140(1, 9)(2, 9)(3, 8)(4, 7)(5, 6)(6, 4)(7, 5)(8, 4)
    • A. Positive
    • B. Negative
    • C. No correlation

  11. Question 11

    The line of best fit for hours studied (x) and test score (y) is y = 2x + 2. Predict the score for 9 hours of study.

    xy246810121481624324048566472800y = 2x + 2

    Answer

  12. Question 12

    Jamal plotted two measurements for 8 plants in a scatter graph. What type of correlation does it show?

    xy24681024681012140(1, 2)(2, 3)(3, 6)(4, 6)(5, 8)(6, 9)(7, 8)(8, 10)
    • A. Positive
    • B. Negative
    • C. No correlation

  13. Question 13

    The line of best fit for hours studied (x) and test score (y) is y = 2x + 7. Predict the score for 10 hours of study.

    xy246810121481624324048566472800y = 2x + 7

    Answer

  14. Question 14

    Chloe plotted two measurements for 8 plants in a scatter graph. What type of correlation does it show?

    xy24681024681012140(1, 10)(2, 10)(3, 7)(4, 6)(5, 5)(6, 5)(7, 5)(8, 2)
    • A. Positive
    • B. Negative
    • C. No correlation

  15. Question 15

    The line of best fit for hours studied (x) and test score (y) is y = 3x + 1. Predict the score for 11 hours of study.

    xy246810121481624324048566472800y = 3x + 1

    Answer

  16. Question 16

    Maya plotted two measurements for 8 plants in a scatter graph. What type of correlation does it show?

    xy24681024681012140(1, 3)(2, 5)(3, 5)(4, 6)(5, 6)(6, 8)(7, 9)(8, 11)
    • A. Positive
    • B. Negative
    • C. No correlation

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  1. 23
  2. No correlation
  3. 31
  4. No correlation
  5. 42
  6. Negative
  7. 24
  8. Negative
  9. 39
  10. Negative
  11. 20
  12. Positive
  13. 27
  14. Negative
  15. 34
  16. Positive