R语言实验分析报告—习题详解.docx

R语言实验报告—习题详解————————————————————————————————作者:————————————————————————————————日期: R语言实验报告习题详解学院: 班级: 学号: 姓名: 导师: 成绩: 目录一、实验目的 1二、实验内容 、行输入的4×5矩阵; ; ; ; 、y数据框 、y数据框 8三、实验总结 8一、实验目的R是用于统计分析、绘图的语言和操作环境。R是属于GNU系统的一个自由、免费、源代码开放的软件,它是一个用于统计计算和统计制图的优秀工具;本次试验要求掌握了解R语言的各项功能和函数,能够通过完成试验内容对R语言有一定的了解,会运用软件对数据进行分析;通过本实验加深对课本知识的理解以及熟练地运用R语言软件来解决一些复杂的问题。二、,2,…,20构成两个4×5阶的矩阵,其中矩阵A是按列输入,矩阵B是按行输入,=A+B;D=A*B;F是由A的前3行和前3列构成的矩阵;G是由矩阵B的各列构成的矩阵,、行输入的4×5矩阵;A<-matrix(1:20,c(4,5))AB<-matrix(1:20,nrow=4,byrow=TRUE)<-matrix(1:20,c(4,5))AB<-matrix(1:20,nrow=4,byrow=TRUE)BC=A+BCD=A*BDF<-A[1:3,1:3]FH<-matrix(c(1,2,4,5),nrow=1)HG<-B[,H],(cm)体重(kg)<-(name=c("zhangsan","lisi","wangwu","zhaoliu","dingyi"),sex=c("F","M","F","M","F"),age=c("14","15","16","14","15"),height=c("156","165","157","162","159"),weight=c("42","49","","52",""))<-(name=c("zhangsan","lisi","wangwu","zhaoliu","dingyi"),sex=c("F","M","F","M","F"),age=c("14","15","16","14","15"),height=c("156","165","157","162","159"),weight=c("42","49","","52",""))(g/L),数据如下: