试验统计方法课后答案

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,习题,P47/1,(1),总体是指所研究的,金针虫,总体；,(2),样本是指从金针虫总体中随机抽取的,6,个个体,组成的样本；,(3),变数是指金针虫的,头数,；,(4),观察值是指变数的,6,个取值,为,6,个观察值。,组,限,组中值（,y,）,划线计数,次数（,）,24.5 27.5,26,2,27.5 30.5,29,7,30.5 33.5,32,24,33.5 36.5,35,41,36.5 39.5,38,21,39.5 42.5,41,4,42.5 45.5,44,45.5 48.5,47,1,P47/2,极差,=46,-,26=20,；组数,=7,；组距,=20/7=2.85713,100,个小区水稻产量资料的次数分布表,100,个小区水稻产量资料的方柱形图,P47/3,100,个小区水稻产量资料的多边形图,P47/4,直接法,:,加权法,:,P47/5,等级差法,:,假定,y,0,=35,，,P47/6,BS24,：,金皇后：,P47/7,10,株小麦的分蘖数为：,3,，,6,，,2,，,5,，,3,，,3,，,4,，,3,，,4,，,3,。,n,=10,，,y,3,=2,，,y,7,=4,，,y,2,-,1,=,y,1,=3,，,y,2,1=6,1=5,P47/8,P72/2,P72/3,在回交后代,200,株中，杂合体非糯稻与纯合体糯稻出现的概率各为,1/2,，即杂合体非糯稻与纯合体糯稻各有,100,株。,F,1,自交得,F,2,代的分离作,3:1,遗传比率，即非糯稻为,0.75,，糯稻为,0.25,，这一分布属离散型随机变数的概,率分布,二项式分布,。,P72/4,非糯稻：,Np,=20000.75=1500,；糯稻：,Nq,=20000.25=500,受害株数,概率函数,P,(,y,),P,(0),0.0010,0.0010,0.40,P,(1),0.0146,0.0156,5.84,P,(2),0.0879,0.1035,35.16,P,(3),0.2637,0.3672,105.48,P,(4),0.3955,0.7627,158.20,P,(5),0.2373,1.0000,94.92,调查单位为,5,株的概率分布表,(,p,=,0.75,，,q,=,0.25,，,n,=400),400.00,样本平均数,(,成数,),的抽样分布,:,样本总和数,(,次数,),的抽样分布,:,P73/6,P73/7,N,(16,，,4),P73/8,N,=5,，,n,=2,次数（,）,1.0,1,1.5,2,2.0,3,2.5,4,3.0,5,3.5,4,4.0,3,4.5,2,5.0,1,5,2,个样本平均数分布的次数分布表,5,2,个样本平均数分布的次数分布图,平均数分布的方柱形图作正态分布。,由,25,个平均数构成的新总体平均数与方差,:,P73/9,P73/10,结果为：,0,，,1,，,0,，,0,，,1,，,1,，,0,，,1,，,1,，,0,