14 lines
261 B
JavaScript
14 lines
261 B
JavaScript
(sample => {
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// mean :: [Num] => (Num | NaN)
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let mean = lst => {
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let lng = lst.length;
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return lng ? (
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lst.reduce((a, b) => a + b, 0) / lng
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) : NaN;
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};
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return mean(sample);
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})([1, 2, 3, 4, 5, 6, 7, 8, 9]);
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