DS4Api.DS4Orientation.StandardDeviation C# (CSharp) Method

        private Vector3 StandardDeviation()
        {
            Vector3 mean = Vector3.zero;
            for (int x = 0; x < accel_array.Count; x++)
                mean += accel_array[x];
            mean /= accel_array.Count;

            Vector3 ret = Vector3.zero;
            for (int x = 0; x < accel_array.Count; x++)
            {
                Vector3 d = accel_array[x] - mean;
                ret += new Vector3(d.x * d.x, d.y * d.y, d.z * d.z) / accel_array.Count;
            }

            ret.x = Mathf.Sqrt(ret.x);
            ret.y = Mathf.Sqrt(ret.y);
            ret.z = Mathf.Sqrt(ret.z);

            return ret;
        }