Presumably this only counts internet users who use Google.

Correct. If 250 M people use it in the US out of a population of 349 M, Google would make 401 B USD out of them, vs 403 B USD in worldwide revenues. These numbers do not look right to me.

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amazingamazing a day ago | parent [-]

If you’re going to extrapolate you should use the median, which would put it at 200B for USA.

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dathinab a day ago | parent | next [-]

that isn't how the median works

median is the sample in the middle of the distribution (when it is treated as a sequence of samples ordered by their value), e.g. if you have sort(seq(dist))=[100$, 5$, 5$, 3$, 1$] the median is 5$

average is sum(dist)/size(dist), so avg * size(dist) => sum(dist)

in the example above that would be median 5, avg. 22.8, total 114, size 5

if you where to multiple the median by size you would have 25$ for the total value, which is very much very wrong

	▲	amazingamazing a day ago \| parent [-]
		True, and yet 5 describes each in the set more accurately than 25.

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dotcoma a day ago | parent | prev [-]

Why ?