分类变量的推断

用 R 分析调查数据

Kelly McConville

Assistant Professor of Statistics

NHANES：种族与糖尿病

按种族划分的糖尿病分布柱状图

推断：卡方检验

原假设：糖尿病患病率与种族无关联。

备择假设：糖尿病患病率与种族有关联。

svychisq(~Race1 + Diabetes, 
         design = NHANES_design, 
         statistic = "Chisq")

    Pearsons X^2: Rao & Scott adjustment

data:  svychisq(~Race1 + Diabetes, design = NHANES_design, 
statistic = "Chisq")
X-squared = 37.708, df = 4, p-value = 0.0001177

Let's practice!

用 R 分析调查数据