Averages/Arithmetic mean: Difference between revisions
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mean xs = sum xs / Data.List.genericLength xs |
mean xs = sum xs / Data.List.genericLength xs |
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=={{header|IDL}}== |
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If truly only the mean is wanted, one could use |
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x = [3,1,4,1,5,9] |
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print,mean(x) |
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But <tt>mean()</tt> is just a thin wrapper returning the zeroth element of <tt>moment()</tt> : |
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print,moment(x) |
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; ==> |
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3.83333 8.96667 0.580037 -1.25081 |
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which are mean, variance, skewness and kurtosis. |
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There are no zero-length vectors in IDL. Every variable has at least one value or otherwise it is <tt><Undefined></tt>. |
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=={{header|J}}== |
=={{header|J}}== |
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