Base Stats are the standard Statistics of a Pokémon. They determine the Pokémon's strengths and weaknesses from a statistical standpoint. The base stats are the reason behind some Pokémon being fast, strong, or able to take a large hit. The average Pokémon will excel in one or two stats, with the better Pokémon excelling in most and the "elites," which include many Legendary Pokémon, are really high in all categories.
Base stats are an important element to remember when training Pokémon, as people should EV train toward the Pokémon's strengths. This way the Pokémon will perform at it's peak for what it does best, as the number of EV's that any one Pokémon can receive from its training is 510.
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