Grades
Points lost to wrong answers
The complement of the raw score. With 50 questions, 42 correct and one point each, the loss is (50 - 42) x 1 = 8 points, which is 8 questions wrong.
The Formula
Points lost = (total - correct) x pointsEach
The complement of the raw score. With 50 questions, 42 correct and one point each, the loss is (50 - 42) x 1 = 8 points, which is 8 questions wrong.
| Symbol | Meaning | Unit | Notes |
|---|---|---|---|
| t | Questions on the paper | questions | 50 in the worked example, the maximum available. |
| c | Questions answered correctly | questions | 42 here, so 8 questions were missed. |
| L | Points deducted by wrong or missing answers | points | 8 points at one point each; multiply by the point value where questions differ. |
What Each Symbol Means
tquestions
Questions on the paper
50 in the worked example, the maximum available.
cquestions
Questions answered correctly
42 here, so 8 questions were missed.
Lpoints
Points deducted by wrong or missing answers
8 points at one point each; multiply by the point value where questions differ.
See It Worked With Real Numbers
A formula on its own does not tell you which number goes where. The how to calculate a test score page applies this equation to a concrete case, shows every intermediate step, and names the mistakes that produce a wrong answer even when the algebra is right.
Where This Formula Appears
This equation is the working core of How To Calculate A Test Score, filed under Education. Every number the guide produces comes from substituting into this one line.