What is the average week, day of birth?

[Indadhanu]

I always thought 40 weeks WAS the 'average'... thats why they put 40 weeks as the EDD, even though we all know that from about 37-38 weeks to 42 weeks is 'full-term'.

So my final answer is 40 weeks


ETA: Jazz was born at 40w1d, I went into labour on the Sunday, she was born via emerg. c/s on the Tuesday.