Bug How are leaderboard average scores calculated?

[Morrus]

We have an odd looking leaderboard; I was wondering how it was calculated and ranked, since it appears fairly random:


Morrus 84% Average over 4 quizzes Name That Module! Today

Sekhmet 50% Average over 1 quizzes Name That Module! Yesterday

Rabulias 50% Average over 1 quizzes Name That Module! Yesterday

mearls 75% Average over 2 quizzes D&D Trivia Quiz I Today

jeffh 50% Average over 1 quizzes Name That Module! Today

Jacob Lewis 50% Average over 1 quizzes Name That Module! Today

Raunalyn 50% Average over 1 quizzes Name That Module! Yesterday

ColonelHardisson 72% Average over 2 quizzes Name That Module! Today

Riley 50% Average over 1 quizzes Name That Module! Today

D'karr 50% Average over 1 quizzes Name That Module! Yesterday

 

[Dylan]

Can you tell me what those people got on their quizzes?

 

[Morrus]

Well, the list has changed since then; it now reads:

User Name Score Quiz Last Taken Taken Date

steeldragons 50% Average over 1 quizzes Name That Module! 2nd January 2013

Olgar Shiverstone 69% Average over 3 quizzes Name That Module! Today

TarionzCousin 80% Average over 4 quizzes How well do you know The Return of the King? Today

Abraxas 50% Average over 2 quizzes What's the Edition for You? Yesterday

wilrich 50% Average over 1 quizzes Name That Module! Today

Aurumaer 50% Average over 1 quizzes How well do you know The Return of the King? Today

jeffh 50% Average over 1 quizzes Name That Module! Yesterday

Riley 50% Average over 1 quizzes Name That Module! Yesterday

Pom 50% Average over 1 quizzes Name That Module! Yesterday

Echohawk 99% Average over 11 quizzes D&D Trivia Quiz IV - Year 2000 Yesterday


I'll try to find the time to tell you what each quiz was scored later today. There's 26 mentioned in the above list!

 

[Dylan]

I don't need every single one Just give me a couple with 1 quiz and a couple with 3-4 quizzes

 

[Morrus]

Well *all* of them with 1 quiz all say 50%. They also all say 100% for that one quiz.

50% over 2 quizzes -- a 100% plus a matching result
72% over 2 quizzes -- a 100% and an 89%
80% over 4 quizzes -- 100, 90, 56, 11

And of course, those percentages aren't descending at all in the leaderboard.

 

[Dylan]

Hmm, not sure what's going on, I'll try and replicate it on my local dev system.

 

[Morrus]

So I can confirm more examples -- a common theme is it saying people have taken one quiz, scored 100%, and giving them an average score of 50%.

 

[Dylan]

I figured out the problem. I'm going to come out with a 1.2.6 release that will fix it shortly and it will have a section in the ACP maintenance to rebuild the leaderboard scores.