I am trying to determine the ability of my students to touch type.
I have data on their speed (in seconds) and their accuracy (number of errors). I also know the number of words in the test (50 words).
Eg. Name: Bob, Speed: 113s, Errors: 19
Eg. Name: Jane, Speed: 831s, Errors: 65
How do I create an index value that places the students with the higher speed and the higher accuracy with the highest index value and a sliding scale for students with lower speed and lower accuracy?
The index would also reflect situations where students are slow but accurate, or fast yet inaccurate.