I'm working on a translation of a paper in portuguese to english. In this paper I work with the average of parameter, but I'm not sure if I should use the word 'average' or 'mean' (specially on graphics). For a non native it's the same thing, but I do not know what word is more scientifically accepted.

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    "Mean" (in mathematical sense) has a reasonably narrow definition. "Average" may be more broadly interpreted. (But of course you need to consider context -- there's an enormous difference between "average American" and "mean American".) (... Well, maybe not THAT enormous.) – Hot Licks Mar 21 '18 at 21:11
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    I'm voting to close this question as off-topic because it belongs to math.stackexchange.com – user 66974 Mar 21 '18 at 21:13
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    If you're talking about the median, 'mean' is incorrect. – Edwin Ashworth Mar 21 '18 at 21:18
  • @EdwinAshworth - Now you're just being average. – Hot Licks Mar 21 '18 at 23:52
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    @Hot Licks I'm a modal citizen. – Edwin Ashworth Mar 22 '18 at 9:52

Technically speaking, average is colloquial (i.e. which average do you mean? See this Wikipedia page on different averages).

To describe the average of a sample, use: sample mean or sample average. Of those, sample mean is more common in academia, but both are perfectly accepted.

To refer to what is normally referred to as average (i.e. the sum of n terms divided by n) use: Arithmetic mean.

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