# 创建学生数据框
student_data <- data.frame(
  序号 = c(1, 2, 3, 4, 5),
  姓名 = c("张三", "李四", "王五", "赵六", "丁一"),
  性别 = c("女", "男", "女", "男", "女"),
  年龄 = c(14, 15, 16, 14, 15),
  身高 = c(156, 175, 158, 172, 154),
  体重 = c(42, 55, 43, 60, 45)
)

# 打印学生数据框
print("学生数据:")
print(student_data)