WHIRLWIND EXPLANATION: Pokémon have a fixed, permanent score from 0 to 31 for each stat that affects how good that stat can ever get.

This calculator will figure out that score (called a "gene" or, more obtusely, an "IV") for you, so you can discard the unworthy. It's more accurate for higher-level Pokémon, so it's helpful to go into a level 100 wifi battle with someone and check your Pokémon's stats from there.

Stat calculator

Nidoqueen
Nidoqueen 		Base
stats		 Stats Effort Stats Effort Possible genes (IVs)
Level Level
HP 90
287–317
31
Attack 92
187–217
11
Defense 87
177–207
31
Special Attack 75
153–184
31
Special Defense 85
173–203
30–31
Speed 76
155–186
31

Hmm, I need more information to figure out your Pokémon's genes exactly. Try raising it to level 100 and entering its new stats.
Remember: if your Pokémon battles at all, you'll need to track the effort it gains. Consider saving your game and using Rare Candy instead.

And for your copy/pasting pleasure:

31 HP; 11/31 Physical; 31/30–31 Special; 31 Speed

or start over