The Sashelp.JunkMail data set comes from a study that classifies whether an e-mail is junk e-mail (coded as 1) or not (coded as 0). The data were collected in Hewlett-Packard labs and donated by George Forman. The data set contains 4,601 observations with 58 variables. The response variable is a binary indicator of whether an e-mail is considered spam or not. The 57 variables are continuous variables that record frequencies of some common words and characters and lengths of uninterrupted sequences of capital letters in e-mails. The following steps display information about the Sashelp.JunkMail data set and create Figure B.10:

title 'Junk E-Mail Data';
proc contents data=sashelp.JunkMail varnum;
   ods select position;
run;

title 'The First Five Observations Out of 4601';
proc print data=sashelp.JunkMail(obs=5) heading=horizontal;
run;