Weight and height measurement for a sample of U.S. children
一个样本的美国儿童体重和身高测量
译者:生物统计家园网 机器人LoveR
描述----------Description----------
A sample from the data presented in the NHANES III survey (http://www.cdc.gov/nchs/nhanes.htm). This survey is used to form the CDC Growth Charts (http://www.cdc.gov/growthcharts) for children.
从数据中提出的NHANES III调查(http://www.cdc.gov/nchs/nhanes.htm)的一个样本。本次调查使用,形成儿童疾病预防控制中心的的生长图表(http://www.cdc.gov/growthcharts)。
用法----------Usage----------
data(kid.weights)
格式----------Format----------
A data frame with 250 observations on the following 4 variables.
一种数据框与250上的以下4个变量的观察。
age Age in months
个月的年龄
weight weight in pounds
重量磅体重
height height in inches
以英寸为单位的高度高度
gender Male of Female
性别男女
源----------Source----------
This data is extracted from the NHANES III survey: http://www.cdc.gov/nchs/nhanes.htm.
该数据中提取,从NHANES III调查结果显示:http://www.cdc.gov/nchs/nhanes.htm。
实例----------Examples----------
data(kid.weights)
attach(kid.weights)
plot(weight,height,pch=as.character(gender))
## find the BMI -- body mass index[#BMI - 身体质量指数]
m.ht = height*2.54/100 # 2.54 cm per inch[每英寸2.54厘米的]
m.wt = weight / 2.2046 # 2.2046 lbs. per kg[2.2046磅。每公斤]
bmi = m.wt/m.ht^2
hist(bmi)