WebPA algorithm
Worked example
• 6 Students on a group project
• Overall group score is 60%
Relative Contributions
But
• Student 1 was the group star
• Student 6 did very little
• The others put in an average performance
Revised Relative Contributions
WebPA Score
• All 6 students have a
WebPA Score = 1
Our Example:
• Student 1’s WebPA
score is 1.67
• Students 2-5 have a
score of 1
• student 6 has a low
score of 0.33.
Individual Marks
Mark Sheets use a WebPA Weighting
100% WebPA weighting
Individual score = WebPA weighting X Group
Score
100% WebPA
• Student1’s score becomes 1.67 x 60 = 100.2
(which WebPA rounds down to 100).
• Students2-5 score 1 X 60 = 60
...
100% Weighting = maximum range
50% WebPA weighting
students’ scores become
(50% X Group Score) + (50% X Group Score X
WebPA score)
50% WebPA weighting
• Student1 score is then
– (50% X 60) + (50% x1.67 X 60) = 80
• Student2-5 score is
– (50% x 60) + (50...
50% WebPA weighting
For Lower WebPA Weightings
• Students receive a larger proportion of the
group marks
• The range of scores is lower
20% WebPA Weighting
Key points
• WebPA uses your assessment form to work
out Relative contributions
• WebPA Scores vary around an average of 1...
Student Marks
• This example is based on an artificial scoring
grid:
Student1 Student2 Student3 Student4 Student5 Student6...
WebPA algorithm Part 1
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WebPA algorithm Part 1

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WebPA uses student marks to generate a WebPA score for each student in the group. These scores show their relative contribution to the project. Tutors generate individual marks by setting a WebPA weighting when they generate a "mark sheet".
This slidedeck works through an example showing the effect of different WebPA weightings.

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WebPA algorithm Part 1

  1. 1. WebPA algorithm Worked example • 6 Students on a group project • Overall group score is 60%
  2. 2. Relative Contributions
  3. 3. But • Student 1 was the group star • Student 6 did very little • The others put in an average performance
  4. 4. Revised Relative Contributions
  5. 5. WebPA Score • All 6 students have a WebPA Score = 1
  6. 6. Our Example: • Student 1’s WebPA score is 1.67 • Students 2-5 have a score of 1 • student 6 has a low score of 0.33.
  7. 7. Individual Marks
  8. 8. Mark Sheets use a WebPA Weighting 100% WebPA weighting Individual score = WebPA weighting X Group Score
  9. 9. 100% WebPA • Student1’s score becomes 1.67 x 60 = 100.2 (which WebPA rounds down to 100). • Students2-5 score 1 X 60 = 60 • Student6’s score becomes 0.33 X 60 = 19.8
  10. 10. 100% Weighting = maximum range
  11. 11. 50% WebPA weighting students’ scores become (50% X Group Score) + (50% X Group Score X WebPA score)
  12. 12. 50% WebPA weighting • Student1 score is then – (50% X 60) + (50% x1.67 X 60) = 80 • Student2-5 score is – (50% x 60) + (50% x 1 x 60) = 60 • Student6 score is – (50% X 60) + (50% X 0.33 X 60) = 40
  13. 13. 50% WebPA weighting
  14. 14. For Lower WebPA Weightings • Students receive a larger proportion of the group marks • The range of scores is lower
  15. 15. 20% WebPA Weighting
  16. 16. Key points • WebPA uses your assessment form to work out Relative contributions • WebPA Scores vary around an average of 1 • You decide the WebPA weighting to apply when you generate mark sheets. • Higher WebPA weightings give greatest variance
  17. 17. Student Marks • This example is based on an artificial scoring grid: Student1 Student2 Student3 Student4 Student5 Student6 Student1 5 3 3 3 3 1 Student2 5 3 3 3 3 1 Student3 5 3 3 3 3 1 Student4 5 3 3 3 3 1 Student5 5 3 3 3 3 1 Student6 5 3 3 3 3 1

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