def make_positive(Data):
    
    """
    Returns Data with all positive values (to correct errors in COVID data)
    Parameters
    ----------
    Data:  array()
        Array of values to be made positive
    Returns
    -------
    Data:  array()
        Array of values made positive
    """
    for i in range(len(Data)):
        if Data[i] < 0:
            Data[i] *= -1
    return Data