** In earlier editions, the rule was simply to roll 3d6 for stats, and use them in the order you rolled.[[note]] 10 is average on 3d6, roughly. That's why it's the average stat. [[/note]]
** Third Edition is a little easier on rolling characters. The DMG explicitly encourages the rerolling of characters whose stats are too below average, and makes the default rule "Roll 4d6 and drop the lowest" rather than 3d6, so above average results will be more common (and the default is that instead of rolling for each stat in order, you roll six times and ''then'' distribute the results to the stats -- this means that while you are still susceptible to getting results above or below average, you can at least make certain that the character's stats roughly fit the role you had in mind). It also lists several alternatives, such as using a "point buy" system or fixed stat array, changing these methods from HouseRules to officially sanctioned options. Fourth Edition actually makes point-buy the default, though the Player's Handbook mentions rolling as an alternative (if one slightly slanted to produce worse stats than one could buy, on average).
** In earlier editions,
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