Vampyr, on 2011-September-28, 05:42, said:
This is incorrect. In modern cards the center pip of an odd-numbered card is neither upside-down or right-side up.
You are right; the true percentage of the number of pips upside down in dummy, on average, is 34.0909% (75/220), not 37.5% as I stated. I am assuming the K, Q and J are deemed to have no pips on them, although they do have suit symbols of course.