Method quadratic

src/main/java/com/thealgorithms/maths/Means.java:125–130

Computes the quadratic mean (root mean square) of the given numbers. The quadratic mean is calculated as: √[(x₁^2 × x₂^2 × ... × xₙ^2)/n] Example: For numbers [1, 7], the quadratic mean is √[(1^2+7^2)/2] = √25 = 5.0 @param numbers the input numbers (must not be empty) @return the

(final Iterable<Double> numbers)

     *      Mean</a>
     */
    public static Double quadratic(final Iterable<Double> numbers) {
        checkIfNotEmpty(numbers);
        double sumOfSquares = StreamSupport.stream(numbers.spliterator(), false).reduce(0d, (x, y) -> x + y * y);
        int size = IterableUtils.size(numbers);
        return Math.pow(sumOfSquares / size, 0.5);
    }

    /**
     * Validates that the input iterable is not empty.