My god you're so dumb... You don't have a freaking clue about statistics as a science at all, do you.
First, these are two independent statistics on the same dataset kid, they are not additive in any way... They can only be considered independently.
Secondly, you should also learn about
sampling and
extrapolation in statistics:
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This is precisely the sampling method which allows extrapolation of a metric on a subset to the global population
Let's not even continue that discussion. It's obvious you haven't done any mathematics past 8th grade. Bye