R statistical Modeling and R software

Textbook catalogue

Chapter One basic knowledge of probability statistics

Chapter II Use of R software

Chapter III Descriptive analysis of data

The fourth chapter parameter estimation

The fifth chapter hypothesis test

The sixth chapter regression analysis

Seventh chapter analysis of variance

The eighth chapter applied Multivariate analysis (I)

The Nineth chapter applies multivariate analysis (II)

The Tenth Chapter computer simulation

Chapter One basic knowledge of probability statistics

Chapter II Use of R software

2.1 Averaging and variance

> X1 <-C ( *, +, +, the,Panax Notoginseng, $, +,Panax Notoginseng, -, the, A, the)>mean (X1) [1]40.41667>SD (X1) [1]3.028901> X2 <-C ( -, About, -, in, the, the, +, the, -, $, the, the)>mean (X2) [1]69.66667>SD (X2) [1]5.210712

2.2 Plotting two-variable scatter plots and single-variable histograms

> X1 <-C ( *, +, +, the,Panax Notoginseng, $, +,Panax Notoginseng, -, the, A, the)> X2 <-C ( -, About, -, in, the, the, +, the, -, $, the, the)>plot (X1, X2)>hist (X1)> hist (X2)

2.3 Linear regression analysis of height and weight

> RT <-read.table ("Exam0203.txt", head=TRUE) RT Name Sex Age Height Weight1Alice F -   56.5   84.02Becka F -   65.3   98.03Gail F -   64.3   90.04Karen F A   56.3   77.05Kathy F A   59.8   84.56Mary F the   66.5  112.07Sandy F One   51.3   50.58Sharon F the   62.5  112.59Tammy F -   62.8  102.5TenAlfred M -   69.0  112.5 OneDuke M -   63.5  102.5 AGuido M the   67.0  133.0 -James M A   57.3   83.0 -Jeffrey M -   62.5   84.0 theJohn M. A   59.0   99.5 -Philip M -   72.0  150.0 -Robert M A   64.8  128.0 -Thomas M One   57.5   85.0 +William M the   66.5  112.0> Lm.sol <-lm (Weight~height, Data=RT)>Summary (LM.SOL) CALL:LM (Formula= Weight ~ Height, data =RT) Residuals:min 1Q Median 3Q Max-17.6807-6.0642   0.5115   9.2846  18.3698coefficients:estimate Std. Error t value Pr (>|t|) (Intercept)-143.0269    32.2746-4.432 0.000366***Height3.8990     0.5161   7.555 7.89e-07***---Signif. Codes0‘***’0.001‘**’0.01‘*’0.05‘.’0.1‘ ’1residual StandardError:11.23On -degrees of Freedommultiple R-squared:0.7705, Adjusted r-squared:0.757F-statistic:57.08On1  and  -DF, P-value:7.887e-07

Source ("myfile.r")

Load ("myworkspace.rdata")

Save.image ("myworkspace.rdata")

Chapter III Descriptive analysis of data

The fourth chapter parameter estimation

The fifth chapter hypothesis test

The sixth chapter regression analysis

Seventh chapter analysis of variance

The eighth chapter applied Multivariate analysis (I)

The Nineth chapter applies multivariate analysis (II)

The Tenth Chapter computer simulation

R statistical Modeling and R software