Woah there granddad, how did you get on the computer ;) I imagine he meant in the normal distribution sense, where 25-40 comprises ~70% of the userbase; entire

Woah there granddad, how did you get on the computer ;) I imagine he meant in the normal distribution sense, where 25-40 comprises ~70% of the userbase; entirely anecdotal but I get the feeling that's a reasonable assessment.