This is the Centaur from the SRD, but also the ARG example.
Racial Traits
Ability Score Racial Traits: Flexible +2 Str, +2 Wis) (2 RP)
Advanced Strength (+2) (4 RP)
Advanced Dexterity (+2) (4 RP)
Advanced Constitution (+2) (4 RP)
Type: Monstrous humanoid (2 RP)
Size: Large (7 RP)
Base Speed: Normal (0 RP) (plus Fast (+10 feet)
Languages: Standard (0 RP)
Defense Racial Traits
Natural Armor: Centaurs have tough skin, granting them a +2 natural armor bonus.
Movement Racial Traits
Fast (+10 feet) (1 RP)
Senses Racial Traits
Darkvision: Centaurs have darkvision and so can see perfectly in the dark up to 60 feet.
Other Racial Traits
Quadruped Centaurs have four legs (2 RP.)
Now there are a few messed up RP points here. Monstrous Humanoid should be 3 RP
Natural Armor is at 2 RP, but it would be 3 RP as Natural Armor is 2 RP, the Improved one is 1 RP which gives us the +2 Natural Armor.
So 30 RP total.
But in the Large (7 RP) section it gives you a +2 Str and a -2 Dex automatically meaning the Dex bonus is negated, but the Centaur would have a total gain of +6 Str but it is not shown.
How was this missed?
Here is my try to build this race
Monstrous Humanoid (3 RP)
Large (7 RP)
[+2 Str, -2 Dex]
Normal Speed (o RP)| Fast (1 RP)
Standard Languages ( 0 RP)
Advanced Ability Score (4 RP)
[+2 Physical; +4 Wis, -2 Cha]
Advanced Dexterity (4 RP)[+2 Dex]
Natural Armor (2 RP)
Improved Natural Armor (3 RP)
Quadruped (2 RP)
Total 26 points
In this my Dex is +2 total (As the other +2 and -2 negates themselves) But I do get a +4 Str and +4 Wis total.