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2013/11/18 Stéphane Aulery <>:

> I do not know if this is doable, but I would find it convenient to name
> the return values of functions to facilitate code maintenance.

Simply use informative variable names.

function statistics(x)
local mean, variance, standard_deviation = 0,0,0
for k=1,#x do mean = mean+x[k] end
mean = mean/#x
for k=1,#x do variance = variance+(x[k]-mean)^2 end
variance = variance/#x
standard_deviation = sqrt(variance)
return mean, variance, standard_deviation