2004年我国卷烟焦油量的探索性数据分析

Exploratory Data Analysis of Tar Level of Chinese Cigarette

介绍了探索性数据分析法的主要特点,并运用该方法对2004年我国卷烟的焦油量进行了探索性数据分析。结果表明:2004年全国有75%以上的卷烟焦油量降到了15.0mg/支以下,有25%以上的卷烟焦油量降到了13.0mg/支以下,卷烟焦油量的整体水平约为13.8mg/支;一、二类卷烟的焦油量明显高于三、四类卷烟,说明其降焦难度相对较大;各企业降焦控焦能力有较大的差异,部分企业的降焦控焦能力较强;2004年第3季度卷烟焦油量的典型值较上半年有增加趋势,但仍有部分企业的控焦水平明显高于上半年;探索性数据分析法所得结论的耐抗性和稳健性明显高于简单加权算术平均值和样本标准偏差方法。结论:探索性数据分析法是一种耐抗性和稳健性的分析方法。

The main characteristics, basic concepts and fundamental principles of exploratory data analysis (EDA) were introduced, and the tar levels of Chinese cigarette brands in 2004 were analyzed with EDA. The results showed that: 1) the tar level of 75 percent of cigarette brands was below 15.0 mg/cig. and that of 25 percent of cigarette brands was under 13.0mg/cig., while the average tar level of Chinese cigarette brands in 2004 was about 13.8mg/ cig.; 2) the tar level of class 1 and class 2 cigarette brands was obviously higher than that of class 3 and class 4; 3) there was a great difference in the ability of tar reducing and controlling among Chinese cigarette manufacturers; 4) the average tar level in the third quarter of 2004 showed a tendency to increase in comparison with that in the first half of the same year, however, some manufacturers showed further progress in controlling tar level; and 5) the resistance and soundness of EDA were obviously higher comparing with simple weighted average and sample standard deviation. It was concluded that EDA was a good analysis method with good resistance and soundness.