Accuracy and Evasion Modifiers

[X-Act]

As you know, the stat modifiers for Attack, Defense, Speed, Special Attack and Special Defense are as follows:

If your modifier is +n, then your stat becomes (n+2) * Stat / 2.
If your modifier is -n, then your stat becomes 2 * Stat / (n+2).

Your modifier is always a number between -6 and +6.

Now, accuracy and evasion modifiers are similar, being numbers between -6 and +6, but they modify the stats differently!

For the accuracy modifier:

If your modifier is +n, then you hit (n+3) * 100 / 3 per cent of the time.
If your modifier is -n, then you hit 3 * 100 / (n+3) per cent of the time.

For the evasion modifier, this is basically reversed, of course:

If your modifier is +n, then you get hit 3 * 100 / (n+3) per cent of the time.
If your modifier is -n, then you gethit (n+3) * 100 / 3 per cent of the time.

Your modifier is a number between -6 and +6 here too.

I'm posting this since there seems to be a general misconception of how much is Double Team's evasion.

For example, a Pokemon that uses Double Team once has evasion modifier +1, so it gets hit 3 * 100 / (1+3) per cent of the time, or 75% of the time. If it uses Double Team again, it now gets hit 3 * 100 / (2+3) percent of the time, or 60%. If you use the same formulae as for the normal stat changes, you get 66.6% and 50%, which is wrong.

 

[obi]

Just a style change, I've always preferred stat * (n+2)/2 etc.

 

[Ugly_Duckling]

Oh, I didn't know the percentage changed for Double Team/Minimize. Thank you for clearing this up. =)

 

[chaos]

Nobody understands this stuff. I request cleaning up/HTMLization.

 

[ryubahamut]

Perhaps a more comprehensive guide can be rolled in, explaining stat modifiers for attack and defense stats, as well as accuracy and evasion stats?

 

[Mekkah]

I'm pretty sure someone made a Stat Goes Up Stat Goes Down guide.

 

[chaos]

i dont remember it, but feel free to locate it

 

[ryubahamut]

I'm pretty sure someone made a Stat Goes Up Stat Goes Down guide.

It isn't on the old site, and I have been unable to find it in the C&C archive. I can give it a shot, though I have never written an article before.

 

[X-Act]

This shouldn't be a guide on its own, but rather incorporated into something larger.

 

[CardsOfTheHeart]

I believe this is the guide you're looking for. It hasn't really been touched in a while, but it has the stat modifiers for every stat sans Critical Hits. It also has nothing on Tailwind, though. (Did we ever figure out where Tailwind modifies the Speed stat?)

 

[chaos]

I remember Arseus was a good user. Anyway, that guide looks great and probably should get another lookthrough

 

[chaos]

That guide has been moved to Project Backlog and this topic has been closed. If anyone wants to help revamp it, I suggest posting in that topic.