def qs(q):
    """
    Helper method for quantile list. 
    Calculates quantile steps for q number of quantiles.
    
    Parameters:
    --------------
    q:    int, number of quantiles
    
    Returns:
    --------------
    quantile_list:    list of quantile steps
    """
    step = 100 / q
    quantile_list = []
    
    for i in range(1,q+1):
        quantile_list.append(i * step / 100)
    return quantile_list