Stats in Question

Max HP= Str×18

Physical Attack=Attribute Type×1.0 +Agi×0.4

(For instance, Agi BG is her Agi×1.0 while Str BG is Str×1.0)

Spell Power=Int×2.4

Physical Defense=(Str÷7)+(Agi÷14)

Spell Resistance=Int÷10

Physical Critical Rate=Agi÷2.5

The Experimentation Tools 

Perks(classes/electives) are used to test stat change. This is due to the gain being static and unaffected by bookshelf. 

STR Test (on INT Unit)

Things to Note

-No physical attack gain (str stat on an int based unit)

-The hp formula will be used (STR gain x 18)

-A portion of the defense formula will be used [Defense=(Str÷7)+(Agi÷14)]. In this case only the STR portion will be used.

-The perk gives 23.5 STR. So this should result in a 423 health gain. As for defense it is expected to either be an increase of physical defense of 3 or 4 (rounding issues).

Results

HP increased by the exact amount according formula. As for physical defense it went up by 4 like the formula would state. The other stat which is affected by STR, physical attack, remains stagnant as Muppet’s primary stat is INT.

AGI Test (on AGI Unit)

Things to Note

-Stat will be used to its full potential

-The physical crit rate formula will be used (Physical Critical Rate=Agi÷2.5)

-AGI is the primary stat. The whole physical attack formula is used as a result (Physical Attack=Attribute Type×1.0 +Agi×0.4)

-A portion of the defense formula will be used [Defense=(Str÷7)+(Agi÷14)]. In this case only the AGI portion will be used.

-The perk gives 151 AGI. This should net 60-61 physical crit chance (rounding issues), 211-212 physical attack (rounding), and 10-11 physical defense (rounding)

Before and After

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Results

All three of the stats boosted as predicted according to the formula. By coincidence, all three stats happened to round up.

Conclusion and Other Notes

Other Notes

-Flat HP, Physical Defense, Magic Resistance, Physical Attack, and Spell Power are stats that do appear on gear. This results in calculating total stats very tedious if one were to attempt in theoretical calculation.

-All units have base stats. Like the flat stat gains from gears, it makes theoretical stat calculation very tedious.

Conclusion

The formulas upon testing have proven to be consistent. With further testing it is very likely it will stay consistent.