高考数学复习第十章统计统计案例第三课时变量间的相关关系与统计案例文市赛课公开课一等奖省名师优质课获奖.pptx

第,*,页,返回导航,高三大一轮复习学案,主干回顾 夯基固源,考点研析 题组冲关,课时规范训练,素能提升 学科培优,1/62,2/62,3/62,左下角,右上角,左上角,右下角,4/62,一条直线附近,5/62,距离平方和最小,6/62,7/62,相关系数,r,正相关,负相关,不存在,0.75,强,8/62,9/62,10/62,2.706,3.841,11/62,12/62,13/62,y,1,y,2,累计,x,1,a,21,73,x,2,22,25,47,累计,b,46,120,14/62,15/62,16/62,17/62,18/62,施化肥量,15,20,25,30,35,40,45,水稻产量,320,330,360,410,460,470,480,19/62,20/62,21/62,22/62,23/62,24/62,25/62,26/62,27/62,28/62,单价,x,(元),8,8.2,8.4,8.6,8.8,9,销量,y,(件),90,84,83,80,75,68,29/62,30/62,31/62,32/62,33/62,34/62,x,10,15,17,20,25,28,32,y,1,1.3,1.8,2,2.6,2.7,3.3,35/62,36/62,37/62,38/62,上网时间(分钟),30,40),40,50),50,60),60,70),70,80,人数,5,25,30,25,15,39/62,上网时间(分钟),30,40),40,50),50,60),60,70),70,80,人数,10,20,40,20,10,40/62,上网时间少于60分钟,上网时间不少于60分钟,累计,男生,女生,累计,P,(,2,k,0,),0.100,0.050,0.025,0.010,0.005,k,0,2.706,3.841,5.024,6.635,7.879,41/62,42/62,43/62,44/62,45/62,46/62,主食蔬菜,主食肉类,累计,50岁以下,50岁以上,累计,47/62,主食蔬菜,主食肉类,累计,50岁以下,4,8,12,50岁以上,16,2,18,累计,20,10,30,48/62,49/62,50/62,51/62,52/62,年份,需求量(万吨),236,246,257,276,286,53/62,54/62,55/62,56/62,57/62,58/62,59/62,60/62,61/62,62/62,