Chapter 0 Introduction and Review 0.1 Parametric and Nonparametric Statistics ·参数统计 -参数:刻画总体分布的(未知)常数 -统计量:仅依赖于样本的量 ·参数方法:基于总体分布的一些假设下进行估计和推断 例1.假设IQ得分X~N(4,102),我们观测到的10个1Q得分为121,98,95, 94,102,106,112,120,108,109.考虑的问题是:平均IQ得分是否显著的大 于1002 零假设:Ho:4=100 对立假设:1:4>100. 检验方法:在正态假设下,使用z-test进行检验, Previous Next First Last Back Forward 1/?Chapter 0 Introduction and Review 0.1 Parametric and Nonparametric Statistics • ÎÍ⁄O - ÎÍ: èxoN©Ÿ(ô)~Í - ⁄O˛: =ù6u˛ - ÎÍê{: ƒuoN©Ÿò be?1O⁄̉ ~ 1. bIQ©X ∼ N(µ, 102 ), ·Ç*ˇ10áIQ©è121, 98, 95, 94, 102, 106, 112, 120, 108, 109. ƒØK¥: ²˛IQ©¥ƒwÕå u100? "b: H0 : µ = 100 È·b: H1 : µ > 100. uê{: 3be, ¶^z-test ?1u. Previous Next First Last Back Forward 1/??