I don't understand how the str is distributed into def.

i am talking about: (for example)

Stat Distribution
Starting/Base stats(All Races):
5 CON
5 STR
5 INT
5 DEX

Suggested stats' templates:-
Yumang(Archer)
1 CON = Max HP +13
6 STR = 4 DEF; +5 STR = DEF +1
1 INT = Max MP +10
1 DEX = Accuracy +8, Dodge Rate +6

Level Up Bonus: Max HP +26, Max MP +22

What is the difference between the 6 str and the 5 str to the defense? Does that mean that when I have 6 str, i would get 5 def? 4def + 1def

i tried searching for the explanation but i can't come up with any.