Ok so looking at the XP amounts for the Archetypes, and the Archetype building guide in the rulebook, the values don't seem to stack up. So starting with a base of 100 XP:

Average Human (P36):

Abilities: +10 XP

1 additional skill at rank 1: -5 XP

Ready for Anything Trait: -5 XP

Starting Experience: 100 (110 given in rulebook)

Labourer (P37):

+2 Wound Threshold: -5 XP

-2 Strain Threshold: +10 XP

Tough as Nails Trait: -5 XP

Starting Experience: 100 (100 given in book)

Intellectual (P38):

-2 Wound Threshold: +5 XP

+2 Strain Threshold: -10 XP

Brilliant! Trait: -5 XP

Starting Experience: 90 (100 given in book)

Aristocrat (P39):

Forceful Personality trait: -5 XP

Starting Experience: 95 (100 given in book)