Data is the material when people do economic statistics *** the data will directly affect the research result,the quality of data is very *** data model and collecting data should be both under the guidance of the eco...
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Data is the material when people do economic statistics *** the data will directly affect the research result,the quality of data is very *** data model and collecting data should be both under the guidance of the economic theory and statistic *** sample is one kind of research methods in analyzing social and economic problems,for it can joint cross section data and time series data,the research result it provides is often very *** should pay attention to it.
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