教育与心理统计学试题一

下表,问四个平行班的成绩是否有本质差异?(a=0.05,)Р班别Р70分以上Р70分以下Р总和Р一班Р22Р23Р45Р二班Р21Р14Р35Р三班Р17Р18Р35Р四班Р27Р17Р44Р总和Р87Р72Р159Р Р专业: 年级: 班级: 学号: 姓名: Р Р·······························密···················封·····················线··························································….Р?Р第1页共8页Р第2页共8页Р专业: 年级: 班级: 学号: 姓名: Р Р·······························密···················封·····················线··························································….Р第3页共8页Р第4页共8页Р第6页共8页Р第5页共8页Р专业: 年级: 班级: 学号: 姓名: Р Р·······························密···················封·····················线··························································….Р专业: 年级: 班级: 学号: 姓名: Р Р·······························密···················封·····················线··························································….Р第8页共8页Р第7页共8页