6 lines
238 B
JavaScript
6 lines
238 B
JavaScript
function root_mean_square(ary) {
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var sum_of_squares = ary.reduce(function(s,x) {return (s + x*x)}, 0);
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return Math.sqrt(sum_of_squares / ary.length);
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}
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print( root_mean_square([1,2,3,4,5,6,7,8,9,10]) ); // ==> 6.2048368229954285
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