使用子集绘制R中的名义变量

# 创建数据框
data <- data.frame(
  gender = c("Male", "Female", "Male", "Female", "Male", "Female"),
  age_group = c("18-25", "26-35", "18-25", "36-45", "26-35", "46+"),
  education = c("High School", "Bachelor", "Bachelor", "Master", "PhD", "Master")
)

# 子集选择
subset_data <- data[data$gender == "Male", ]  # 选择性别为男性的数据

# 绘制名义变量
barplot(table(subset_data$age_group), main = "Age Group Distribution", xlab = "Age Group", ylab = "Count")

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