推荐回答(2个)
箱形图
”盒式图”或叫”盒须图””箱形图”boxplot
须图又称为箱形图,其绘制须使用常用的统计量,最适宜提供有关数据的位置和分散的参考,尤其在不同的母体数据时更可表现其差异
常用的统计量 :平均数、中位数、百分位数、四分位数、全距、四分位距、变异数和标准差
箱形图的绘制
盒须图提供了一种只用5个点对数据集做简单的总结的方式。这5个点包括中点、Q1、Q3、分部状态的高位和低位。盒须图很形象的分为中心、延伸以及分部状态的全部范围
盒式图中最重要的是对相关统计点的计算,相关统计点都可以通过百分位计算方法进行实现
附: 统计学名词
population 母体
sample 样本
census 普查
sampling 抽样
quantitative 量的
qualitative/categorical 质的
discrete 离散的
continuous 连续的
population parameters 母体参数
sample statistics 样本统计量
descriptive statistics 叙述统计学
inferential/inductive
statistics 推论/归纳统计学
levels of measurement 衡量尺度
nominal scale 名目尺度
ordinal scale 顺序尺度
interval scale 区间尺度
ratio scale 比例尺度
frequency distribution 次数分配
relative frequency 相对次数
range 全距
class midpoint 组中点
class limits 组限
class boundaries 组界
class width 组距
cumulative frequency (以下) 累加次数
decumulative frequency 以上累加次数
histogram 直方图
pie chart 饼图
ogive 肩形图
frequency polygon 多边形图
cumulative frequency polygon 累加次数多边形图
box plot 盒须图
stem and leaf plot 枝叶图
measures of central tendency 中央趋势量数
mean 平均数
median 中位数
mode 众数
location measures 位置量数
percentile 百分位数
quartile 四分位数
decile 十分位数
dispersion measures 分散量数
range 全距
interquartile-range IQR 四分位距
mean absolute deviation 平均绝对离差
variance 变异数
standard deviation 标准差
coefficient of variation 变异系数
left-skewed 左偏
negative-skewed 负偏
right-skewed 右偏
positive-skewed 正偏
contingency table 列联表
sampling distribution (of a statistic)(某个统计量的) 抽样分布 point estimate 点估计值
point estimator 点估计式
unbiased estimator 不偏点估计式
efficient estimator 有效点估计式
consistent estimator 一致点估计式
confidence level 信赖水准
confidence interval 信赖区间
null hypothesis 虚无假设
alternative hypothesis 对立假设
left-tailed test 左尾检定
right-tailed test 右尾检定
two-tailed test 双尾检定
test statistic 检定统计量
critical value 临界值
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