N

National Survey of Family Growth 全国家庭成长调查 3,4,18,19,25,29,31,39,73,74,75,76,77,78,81,109 natural experiment 自然实验 109,110 noise 噪声 101 normal distribution 正态分布 38,40,41,43,51,64,65,67,68,69,70,81,85,86,87,97,103 normal probability plot 正态分布概率图 40,46 normalization 标准化 13,22 normalize 标准化 97,110 normalizing constant 标准化常数 56,59 NSFG NSFG 3,4,18,19,25,29,31,39,73,74,75,76,77,78,81,109 null hypothesis 零假设 73,74,79,83