
Originally Posted by
sirgog
In D&D, commoners have stats determined by rolling 3d6 for each statistic.
Mathematically, in a given stat this means that 50% of people will have scores between 3 and 10, the other 50% having 11-18, with about 49% having 9, 10, 11 or 12.
That's the stats you generally have - some things, of course, such as serious back injuries, taking steroids, brain damage etc. can change them.
Alternately (and I prefer this method), if you've done any statistics, you can extrapolate from the approximation that is 3d6 that the mean ability score is 10.5, and the standard deviation is about 3. Assuming a normal distribution, this ends up meaning that 50% of people have 10 or less, 84% of people have 13 or less, and 97.5% of people have 16 or less in a given score. Continuing this pattern, 75 people in 100, 000 have a score of 20 or more in a given attribute, and 1 in 100, 000 has 23 or more.
So that would make the scores mean the following (I'll take Constitution and Intelligence as examples)
4 Con: Frail. Can walk 200 metres with the help of a frame, then is exhausted.
4 Int: Generally considered mentally ********. Vocabulary/memory of a three-year-old.
7 Con: Can run 400 metres, then is puffed and unable to continue.
7 Int: Completed Year 10 education, failed year 11 and dropped out
10 Con: Can run a kilometre, very uncompetitive time
10 Int: Completed Year 12, average results
13 Con: Can run 5 kilometres in a time that would be good enough for third place in a typical school race (assuming about 20 in the race)
13 Int: A-grade student at school, C-grade at university
16 Con: One of the best in their year level at their school in long-distance, didn't set any records.
16 Int: Top of the class at school, A- grade student at university
18 Con: Marathon runner, never wins but always finishes well
18 Int: A+ student at university, considered a genius
21 Con: Marathon runner, world class, Olympic medal prospect but probably not taking home the gold
21 Int: Respected authority in their field, not a household name (e.g. Emmy Noether, mathematician)
24 Con: Capable of feats of endurance that make people think OMG***BBQ - able to run at a solid pace (say 15kph) for 24 hours, swim non-stop in frozen water for 24 hours, etc.
24 Int: World-renowned authority in their field, made major quantum leaps in ideas, household name (e.g. Albert Einstein, physicist)