So times we want to know not only how many times something occurs but how frequently on average.  Yes, there is a difference. Yes, I’m gonna use a Randy vs. Anton story as an example.  So, say in one dimension, Randy catches Anton 3 out of 5 times or 60%.  But one time, it takes him 1 year, another time 2 years, and yet another time 3 years.  So the total follow-up time is actually 1 + 2 + 3 = 6 years for the times that Randy actually caught Anton.  Of course, let’s just say there were two times Randy give up on Anton after 3 years, so adding this to the total follow-up time would give 6 + 3 + 3 = 12 years.  And then dividing the number of times he caught Anton over the total follow-up would be 3/12 = 25%.  So that’s kind of a bummer if you think about it. Randy only has a 25% (and not a 60%) chance of catching Anton in any given year.  Or does he …

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Till next time … but you can always find out sooner by going to amazon and … yeah, you know already.

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