def S_get_cluster_centroid_data(_data_list):
    """
    Finds the centroid of a given two dimensional data samples cluster
    """
    ds = len(_data_list)

    if ds > 0:
        x_sum = 0
        y_sum = 0
        for i in _data_list:
            x_sum += i[0]
            y_sum += i[1]
        return (x_sum / ds, y_sum / ds)