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Broken Keyboard (Posted on 2009-04-06) Difficulty: 2 of 5
The up arrow on my keyboard died. One place where I often use it is when entering course grades.

Before if I had a bunch of graded tests for a class and need to enter them into my grading program I would simply click the blank for the student, enter the grade, then move up or down with the arrows to the student for next test in my pile.

Now I can move down with the down arrow but to go up the list I have to reach over to my mouse to click the correct spot which takes a bit longer.

My question is: for a class of size n, how many times should I expect to have to use my mouse to move up the list? (Assume the tests are in a completely random order.)

No Solution Yet Submitted by Jer    
Rating: 3.0000 (2 votes)

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  Subject Author Date
SolutionSolutionRobby Goetschalckx2009-04-06 14:55:43
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