统计分析中使用较多的均值、方差、标准差、极差、变异系数、偏度及丰度，中位数、下四分位数、上四分位数、四分位极差、下截断点、上截断点-Statistical analysis using more mean, variance, standard deviation, range, coefficient of variation, skewness and abundance, median, lower quartile, upper quartile, interquartile poor, Censored point, the cut-off point