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import variance from "./variance.js";
/** * The [standard deviation](http://en.wikipedia.org/wiki/Standard_deviation) * is the square root of the variance. This is also known as the population * standard deviation. It's useful for measuring the amount * of variation or dispersion in a set of values. * * Standard deviation is only appropriate for full-population knowledge: for * samples of a population, {@link sampleStandardDeviation} is * more appropriate. * * @param {Array<number>} x input * @returns {number} standard deviation * @example * variance([2, 4, 4, 4, 5, 5, 7, 9]); // => 4 * standardDeviation([2, 4, 4, 4, 5, 5, 7, 9]); // => 2 */function standardDeviation(x) {    if (x.length === 1) {        return 0;    }    const v = variance(x);    return Math.sqrt(v);}
export default standardDeviation;