def standard_approximation(mean, std):
    """Calculate standard approximation of mean and standard deviation.

    Calculates the standard approximation of mean and standard deviation
    by assuming that we are dealing with a normal distribution.

    Parameters
    ----------
    mean : float
        Mean of the observed distribution

    std : float
        Standard deviation of the observed distribution

    Returns
    -------
    Median and IQR under the assumption that the values have been
    observed from a normal distribution.
    """
    median = mean
    iqr = std * 1.35

    return median, iqr