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十二、测评结果——ISO9000获证公司与未获证公司之间收益方差及累积均值的比较以前的研究没有考虑 ISO9000认证对企业经营业绩变动性(或波动性)的影响。2007年 Brigham 和 Houston研究指出:收益的变动性体现了风险的大小,因此,有必要检验 ISO9000认证对收益风险(或变动性)的影响。前面提到,有些研究曾经提到:ISO9000认证有助于企业的平稳运营,这就意味着 ISO9000认证有助于降低收益的变动性(或波动性)。为了探讨这个问题,本文研究的第二个目的中的一部分,就是要检验 ISO9000认证对
Results of the Evaluation - Comparison of Earnings Variance and Cumulative Means Between ISO 9000 Certified Companies and Unidentified Companies Previous studies did not consider the impact of ISO9000 certification on changes in business performance (or volatility). 2007 Brigham and Houston study pointed out: the volatility of income reflects the size of the risk, it is necessary to test the impact of ISO9000 certification on the risk of return (or volatility). Mentioned earlier, some studies have mentioned: ISO9000 certification contribute to the smooth operation of the enterprise, which means that ISO9000 certification can help reduce the volatility of earnings (or volatility). In order to explore this issue, part of the second purpose of this study is to test the ISO9000 certification