def METHOD_NAME(self):
    """Return summary"""
    title = self.title + ". " + self.h0 + ". " \
                              + self.conclusion_str + self.signif_str + "."
    data_fmt = {"data_fmts": ["%#0.4g", "%#0.4g", "%#0.3F", "%s"]}
    html_data_fmt = dict(data_fmt)
    html_data_fmt["data_fmts"] = ["<td>" + i + "</td>"
                                  for i in html_data_fmt["data_fmts"]]
    return SimpleTable(data=[[self.test_statistic, self.crit_value,
                              self.pvalue, str(self.df)]],
                       headers=['Test statistic', 'Critical value',
                                'p-value', 'df'],
                       title=title,
                       txt_fmt=data_fmt,
                       html_fmt=html_data_fmt,
                       ltx_fmt=data_fmt)