Chapter four is example study, based on the stock market of Shanghai, selected 34 cross-sectional stocks with preferable performance, and made a demonstration analysis of grouped investment on them.

• 第四章是实例研究，以上海股市作为考察对象，从中选出34种业绩较好、有代表性的股票，对它们进行组合证券投资的实证分析。