Guessing on a Test

[PokémonMaster]

Okay, this isn't UIL, but I was wondering if y'all could help with it. I'm probably just overlooking something, anyways.

Let's say I am taking a test. I did not study, so I know none of the answers and I have to guess on every question. What I am wondering is, is there a greater chance for correct answers when choosing all of one answer(all A's,etc.) than choosing randomly?
I can't find any differences, but I had my friend write 3 different "tests" for me with answer choices A-D, and every time just sticking with one answer yielded higher results.

Thank you! :D

[nsguy1350]

There should not be. If you do it randomly enough times, then compare that to picking all As, Bs, Cs, Ds, and Es, on average it will cancel out. Just a coincidence.

[chrishuff]

Unless if you really want to beat the statistics and try to guess strategically A-B-B-E-D-D-C-B-A-A-C-B-B-B-E-E-D-E-D-D-A-B-C, etc. rather than guessing all of one letter in which we all know that there was never such a test where the answer key was all one letter. >:)

[101dalmatians]

[nsguy1350]

No matter your strategy, given enough trials with a truly random answer key, without any knowledge or indication of the answers to any of the questions, you will end up at precisely 20%.

[PokémonMaster]

Okey dokey, My coach and I had been wondering about it, but I guess it was coincidence. Thank you! :D