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Same level, Higher IV lower CP?

I always assumed the higher IV the higher CP for same level. But I encountered a couple of times now that I've hatched same level pokemon where lower IV has higher CP. For example:
Sandshrew:
CP 431, HP 66, level 20: HP 12 ATK 13 DEF 9 = 76%
CP 428 HP 66, level 20: HP 12 ATK 10 DEF 15 = 82%

This must mean that different IV categories have different impact on CP. So while 100 IV is always highest CP given a specific level, this is not true for pokemon below 100% IV. Am I correct?

So which IV category is most important for high CP for pokemon below 100%? Is it attack IV?

Asked by Aucag8 years 4 months ago
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Answers

Yes, higher attack IV = higher CP.

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by SATBBB 8 years 4 months ago

Atk>>Def>Stm

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Could you paste the relevant formula? It's a bit hard to find in the jungle. :P

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Research > Pokemon > Pokemon stats - advanced

CP = (Attack * Defense^0.5 * Stamina^0.5 * CP_Multiplier^2) / 10

So assume a pokemon is level 14 because that CPM is easy to use as it's more or less 0.5.

If a pokemon has 100 base attack, defence and stamina, then it's CP would be (100 x 100^0.5 x 100^0.5 x 0.5^2)/10 = 2500 / 10 = 250 CP.

If that pokemon has 15 attack IVs, then it's CP would be (115 x 100^0.5 x 100^0.5 x 0.5^2)/10 = 2875 / 10 = 287 CP, an increase of 37 CP.

While if it had 15 def or 15 stamina IV, then it's CP would be (100 x 115^0.5 x 100^0.5 x 0.5^2)/10 = 2680 / 10 = 268 CP, an increase of only 28 CP.

It also explains why Dragonite has the highest max CP currently available, since it's base attack stat is so high, while pokemon with low attack but high defence or HP such as Chansey or Wigglytuff have much lower max CP values.

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Do you have idea why do Niantic weigh on Atk? Are the abilities of Pokemons really reflected in CP? or it could happen that, ceteris paribus, the pokemons with lower Atk (and thus low CP) are essentially stronger than those with high CP?

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No idea. Maybe some intern at Niantic forgot to square root the attack too.

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The other guy posted the formula but I just wanted to add:
Basically the Attack IV should count double. So a 15 attack, 10 defense, 5 Stamina pokemon is actually 75% perfect rather than 67% perfect when looking from a CP perspective.

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Strange this isn't taken into account in the appraisal system or when using the IV calculator. I think it should since it's a rather important detail. Do you know if the the IV:s are weighted the same in the original games or if ATK is worth more in the original games as well?

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To tell you the truth, I didn't go into the formulas too...XD
What I said comes from my experience, but I think it is true.

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