Credit History Length

[morganirish]

my aaoa is 3 years and I just moved into the good (yellow) in the last few weeks, but it is listed in the red in the section what's hurting your score.   But it is not listed as the number one thing.  

[Anonymous]

I have purchased the Suze Orman kit and her reports tell you the norms and averages.  Average history is 14 yrs

[vanillabean]

I'm reminded that length of credit history is 15% of what makes up your credit score and includes both the oldest account and average age of accounts.

It could be this whole deal is somewhat overrated. A while back when DW and I hit the $0 baseline, her higher AAoA by several years amounted to a mere 11 point difference, for both EQ and TU.

Rebucketing aside, do you know if the oldest and the average are weighted equally and if it goes by say month? And what a ten year difference of oldest or average may translate into in terms of points?