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统计资料的表达与描述用-x±s表达近似服从正态分布的定量资料,用M(QR)表达呈偏态分布的定量资料;用统计表时,要合理安排纵横标目,并将数据的含义表达清楚;用统计图时,所用统计图的类型应与资料性质相匹配,并使数轴上刻度值的标法符合数学原则;用相对数时,分母不宜小于20,要注?
The statistical data expression and description with-x ± s expression approximately obeys the normal distribution of quantitative data, using M (QR) to express the skewed distribution of quantitative data; with statistical tables, the rational arrangement of vertical and horizontal headings, and data The meaning of the expression clearly; the use of charts, the type of statistical charts should be used to match the nature of the data, and the number of scales on the axis of the standard law in line with mathematical principles; relative number, the denominator should not be less than 20,