So the way this happens is that the monotype, primary, and secondary results are all calculated separately - in analyzing Pokedex entries, I distinguished between the traits of a monotype vs. either half of a dual-type, because there seemed to be some significance in that distinction (to acknowledge whatever logic causes them to make 93% of Flying-types Flying-secondaries, for instance). There's usually a lot of overlap in traits between a type's monotype/primary/secondary varieties, but certain types (like Fairy) can be a little more spread out. I hope that clears things up!