hello

I have to test a number of people typing:
"The quick brown fox jumped over the lazy dog"

and then compare there input results, like how long they hold down a key for and how long between keystrokes.

The problem i have is how many times should i get them to type the phrase, and how many people should i run the test on!?

Hope some one can help, cheers in advance, and if you ned me to elaborate then let me know

Andy