... focuses on Fortune 500 for they delegate main stream of stock market in the world. 2. Selecting 500 shares of manufacture sector and 500 shares of service factor from Fortune website and input them into tables with SPSS software. 3. Using SPSS to random 20 cases out of 500 companies in manufacture sector as well as in service factor. 4. Searching for share prices and other data related to companies' size. The sizes are limited to three factors: revenue, profit and the number of employees. These three factors are main criteria for evaluate a company's scale. Producing these two sectors tables as spreadsheets. 5. Ranking price within these two tabled samples as ascending order.(Figure:1,Figure:2) There are some assumptions and conditions related to the above procedures: 1. The samples are completely random. 2. The samples selected are representatives of all population. 3. Each score within the sample is independent of all other scores. There are not influences among ...

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