不同国家、不同地区、不同时间的经济状况和人的身体状况相似,有高有矮、有大有小、有好有差、有强有弱、有胖有瘦,而且每年、每月、每天、甚至每时都在变化着。要了解经济运行状况是否健康?是否存在成长中的烦恼?需要有像温度计、听诊器、B超、CT那样的观测器械来诊断。对经济肌体而言,统计就是一种科学的诊断工具,要正确地分析判断经济形势,必须从统计指标入手。但统计指标成千上万,而且,很可能不同指标提供的信息会对经济形势的判断作出不同的解释。例如,同一年里,从GDP增长情况来看经济发展势 Different countries, regions, at different times of economic conditions and the physical condition of people are similar, there are high and low, there are large and small, good and poor, strong and weak, fat and thin, but also every year, every month, every day , Even changing every hour. To understand the health of the economy is healthy? Are there growing troubles? Need to have a thermometer, stethoscope, B, CT, such as the observation of equipment to diagnose. For the economic body, statistics is a scientific diagnostic tool, to correctly analyze and judge the economic situation, we must start from the statistical indicators. However, there are tens of thousands of statistical indicators, and it is likely that the information provided by different indicators may give different interpretations of economic judgments. For example, in the same year, economic growth was viewed from the perspective of GDP growth