## A Handbook of Statistical Analyses Using S-PLUSSince the first edition of this book was published, S-PLUS has evolved markedly with new methods of analysis, new graphical procedures, and a convenient graphical user interface (GUI). Today, S-PLUS is the statistical software of choice for many applied researchers in disciplines ranging from finance to medicine. Combining the command line language and GUI of S-PLUS now makes this book even more suitable for inexperienced users, students, and anyone without the time, patience, or background needed to wade through the many more advanced manuals and texts on the market. The second edition of This handbook provides the perfect vehicle for introducing the exciting possibilities S-PLUS, S-PLUS 2000, and S-PLUS 6 hold for data analysis. All of the data sets used in the text, along with script files giving the command language used in each chapter, are available for download from the Internet at http://www.iop.kcl.ac.uk/iop/Departments/BioComp/splus.shtml |

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### Contents

An Introduction to SPLUS | 1 |

The SPLUS GUI An Introduction | 3 |

The SPLUS Command Language An Introduction | 6 |

Vectors and Matrices | 7 |

Other SPLUS Objects | 8 |

An Example of an SPLUS Session | 10 |

Exercises | 18 |

Describing Data and Assessing Distributions Husbands and Wives | 19 |

Estimating the Parameters in a Mixture Fitted to the Geyser Eruption Data | 113 |

Exercises | 121 |

Survival Analysis Motion Sickness and Bird Survival | 123 |

Describing Survival Times and Coxs Regression | 126 |

The Hazard Function | 127 |

Analysis Using SPLUS | 128 |

Bird Deaths | 132 |

Exercises | 136 |

Some Basic Summaries | 22 |

Analysis Using SPLUS | 23 |

Exercises | 32 |

Analysis of Variance Poisoning Rats and Losing Weight | 33 |

Analysis of Variance | 35 |

Analysis Using SPLUS | 37 |

Analysis of Variance of Survival Times of Rats | 38 |

Analysis of Variance of Slimming Data | 44 |

Exercises | 50 |

Multiple Regression Technological Change in Jet Fighters | 51 |

Multiple Regression Model | 52 |

Exercises | 64 |

Logistic Regression Psychiatric Caseness and Mortgage Default | 65 |

Analysis Using SPLUS | 70 |

Mortgage Default Data | 79 |

Exercises | 88 |

Analysing Longitudinal Data Beating the Blues | 89 |

Analysis Using SPLUS | 92 |

Random Effects Models for the Depression Data | 96 |

Exercises | 106 |

Nonlinear Regression and Maximum Likelihood Estimation Athletes and Geysers | 107 |

Nonlinear Regression and Maximum Likelihood Estimation | 108 |

Analysis Using SPLUS | 110 |

Exploring Multivariate Data Male Egyptian Skulls | 137 |

Analysis Using SPLUS | 140 |

Exercises | 154 |

Cluster Analysis Low Temperatures and Voting in Congress | 155 |

Analysis Using SPLUS | 158 |

Clustering Cities in the United States on the Basis of their YearRound Lowest Temperature | 159 |

Classifying New Jersey Congresspeople on the Basis of their Voting Behaviour | 165 |

Exercises | 172 |

Bivariate Density Estimation and Discriminant Analysis Blood Fat Concentration | 173 |

Analysis Using SPLUS | 176 |

Discriminant Analysis | 190 |

Exercises | 200 |

The SPLUS Language | 201 |

List Objects | 206 |

Data Frames | 208 |

Reading Data into SPLUS | 210 |

SPLUS Functions | 212 |

Graphics | 221 |

Answers to Selected Exercises | 225 |

233 | |

235 | |