redline wrote:
working on the average of 2.4 children per household in th u.k. Eddie the elf reckons the formula is
you take 24 from 38 divide by 2.4 to get the average age of mums taking there children to see Santa.
14 divided by 2.4 = 5.83 recurring
add that onto 16 ( youngest respectable age to give birth these days ) gives you an average age of mums taking children to see santa as

21 years and 8 months

Now are you going to argue with an elf 10 days before christmas

I am! That would be the average age of a mother when giving birth to their first child, if a woman had an 8 year old at age 21y8m years, they would have had to have given birth at age 13y8m. If this where true, and we know that many women are putting off children to a later age, it would suggest that there are as many women giving birth below (and as far below) the average as they are above (and as far above).
Taking statistics from Eurostat (independant statisticans) about first time mothers in the UK
In 2004 there were 102,228 births to women aged 35-39
then by your calculations there must have also been around 100,000 births to females aged up to 26 years beneath your average.
This means that there must be mothers giving birth at age - 9 years.
Obviously this is impossible, but we do know that the [url=http://youngest_mother.tripod.com/]
youngest mother[/url] in recorded history was aged 5 years, 8 months at the birth.
so to make any sensible assumptions, weighted statistics could come into play.
If 100,000 women are giving birth to children up to 26 years above your average of 13, then to back up your statistics, and using Lina Medina as a minimum age, then the number of children given birth to by mothers in the age range 5y8m to 13y8m (or up to 8 years below your average) then the maths work thusly.
The ratio of the age ranges is 26:8, which equates to 3.75:1
So for every parent in the range above the average, there are 3.75 below.
This means that in 2004 102,228*3.75, or 383,355 children born to mothers below 13y8m.
Now, according to the 2001 census, there are 4,505,225 people aged between 5 and 13 in England, so half that and the rough number of girls in that age is 2252612.
this would mean that 1 in every 6 girls below third year of senior school (year 9) would have a child.
Somehow I think your elf may be mistaken!
