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- set output error
- set display page 23
- set more 1
- #delimit ;
-
- di _n(23) in wh
- " ___ ____ ____ ____ ____ tm" _n
- " /__ / ____/ / ____/" _n
- "___/ / /___/ / /___/ Data sets provided by C.R.C." _n
- "------------------------------------------------------------"
- _n(2) ;
-
- #delimit cr
- mac def path
- capture run nullfile.tut
- if _rc {
- mac def path "\stata\"
- capture run %path`nullfile.tut
- if _rc {
- mac def path "/usr/stata/"
- capture run %path`nullfile.tut
- if _rc {
- #delimit ;
- di in red
- "I cannot find the other tutorial files. I have looked in the current" _n
- "directory and in \stata (DOS) or /usr/stata (Unix). Is Stata installed" _n
- "correctly?" _n(2)
- "In any case, I cannot run the tutorial." ;
- #delimit cr
- exit
- }
- }
- }
- macro define F5 "do %path`contents.tut;"
- macro define F6 "do %path`ourdata.tut;"
- #delimit ;
-
- di in gr
- "Whether you have the demonstration system or the full package, we provide "
- "seven" _n
- "data sets to get you started. They are:" _n(2)
- _col(9) "Name of data set" _col(41) "How to use it" _n
- _col(9) _dup(16) "-" _col(41) _dup(31) "-" _n
- in ye _col(9) "auto.dta" _col(41) in wh "use %path`auto, clear" _n
- in ye _col(9) "census.dta" _col(41) in wh "use %path`census, clear" _n
- in ye _col(9) "hsng.dta" _col(41) in wh "use %path`hsng, clear" _n(2)
- in ye _col(9) "kva.dta" _col(41) in wh "use %path`kva, clear" _n
- in ye _col(9) "cancer.dta" _col(41) in wh "use %path`cancer, clear" _n(2)
- in ye _col(9) "systolic.dta" _col(41) in wh "use %path`systolic, clear" _n
- in ye _col(9) "sysage.dta" _col(41) in wh "use %path`sysage, clear" _n(2)
- in gr
- "Feel free to experiment with them." _n ;
- set more 0 ; more ; set more 1 ;
-
- di _n(2) in wh
- "auto.dta" _n
- "--------" _n ;
-
- di _n in wh _dup(79) "-" _n in gr
- "To load the automobile data, you type:" _n
- in wh _dup(79) "-" _n(3)
- ". use %path`auto, clear" ;
- noisily use %path`auto, clear ;
-
- di _n(2) in wh _dup(79) "-" _n in gr
- "This data originally came from Consumer Reports, April 1979, and from the" _n
- "United States Government EPA statistics on fuel consumption. It was com-" _n
- "piled and published in "
- in ye "Graphical Methods for Data Analysis" in gr ", The Wadsworth" _n
- "Statistics/Probability Series, 1983." _n(2)
- "You can discover the contents of a data set by typing '"
- in wh "describe" in gr "':" _n
- in wh _dup(79) "-" _n(2)
- ". describe" ;
- set more 0 ; more ; set more 1 ;
- noisily describe ;
- di _n in wh _dup(79) "-" _n in gr
- "The automobile data contains information on 74 cars. You should be able to" _n
- "figure out the data based on the description." _n
- in wh _dup(79) "-" _n ;
- set more 0 ; more ; set more 1 ;
- di _n(2) in wh _dup(79) "-" _n in gr
- "Another good way to learn about a data set is to '"
- in wh "summarize" in gr "' it. When you type" _n
- "'" in wh "summarize" in gr
- "' without arguments, all the variables are summarized:" _n
- in wh _dup(79) "-" _n(3)
- ". summarize" ;
- noisily summarize ;
- di ; set more 0 ; more ; set more 1 ;
- di in wh _dup(79) "-" _n in gr
- "There are zero observations on make because it is a string variable. There"
- _n
- "are 69 observations on rep78 because there are some missing values." _n
- in wh _dup(79) "-" _n ;
- set more 0 ; more ; set more 1 ;
-
- di _n(2) in wh _dup(79) "-" _n in gr
- "You can learn more about categorical variables by tabulating them. Compare" _n
- in wh "tabulate" in gr " with " in wh "summarize" in gr ":" _n
- in wh _dup(79) "-" _n(2)
- ". summarize rep78" ;
- noisily summarize rep78 ;
- di _n in wh ". tabulate rep78" ;
- noisily tabulate rep78 ;
- set more 0 ; more ; set more 1 ;
-
- di _n(2) in wh _dup(79) "-" _n in gr
- "Next on our list is the Census data:" _n
- in wh _dup(79) "-" _n(2)
- ". use %path`census, clear" ;
- noisily use %path`census, clear ;
- di _n in wh ". describe" ;
- noisily describe ;
- set more 0 ; more ; set more 1 ;
- di _n(2) in wh _dup(79) "-" _n in gr
- "Again, we learn more about the data by summarizing it:" _n
- in wh _dup(79) "-" _n(2)
- ". summarize" ;
- noisily summarize ;
- di _n in wh _dup(79) "-" _n in gr
- "There are zero observations on state because it is a string variable." _n
- in wh _dup(79) "-" ;
- set more 0 ; more ; set more 1 ;
-
- di _n(15) in wh _dup(79) "-" _n in gr
- "Now let's look at " in ye "hsng.dta" in gr
- ". It also contains 1980 Census data on the 50" _n
- "states, only this data concerns the value and cost of housing." _n
- in wh _dup(79) "-" _n(2)
- ". use %path`hsng, clear" ;
- noisily use %path`hsng, clear ;
- di _n in wh ". describe" ;
- set more 0 ; more ; set more 1 ;
- noisily describe ;
- di _n ; set more 0 ; more ; set more 1 ;
-
- di _n(2) in wh _dup(79) "-" _n in ye
- "kva.dta" in gr
- " contains failure time for a fictional experiment with generators. We" _n
- "used this data in our tutorial on survival analysis:" _n
- in wh _dup(79) "-" _n(3)
- ". use %path`kva, clear" ;
- noisily use %path`kva, clear ;
- di _n in wh ". describe" ;
- noisily describe ;
- di _n(2); set more 0 ; more ; set more 1 ;
-
- di _n(2) in wh _dup(79) "-" _n in gr
- "We also used "
- in ye "cancer.dta" in gr " in our survival analysis tutorial. It contains fic-"
- _n
- "tional data on a drug trial:" _n
- in wh _dup(79) "-" _n(2)
- ". use %path`cancer, clear" ;
- noisily use %path`cancer, clear ;
- di _n in wh ". describe" ;
- noisily describe ;
- di _n(2) ; set more 0 ; more ; set more 1 ;
-
- di _n(2) in wh _dup(79) "-" _n in gr
- "We used " in ye "systolic.dta" in gr
- " in our tutorial on ANOVA. This is one of the classic" _n
- "data sets for two-way analysis-of-variance designs. It is from A. A. Affi" _n
- "and S. P. Azen, "
- in ye "Statistical Analysis: A Computer-Oriented Approach" in gr ", Academic"
- _n
- "Press, 1972." _n
- in wh _dup(79) "-" _n(3)
- ". use %path`systolic, clear" ;
- noisily use %path`systolic, clear ;
- di _n in wh ". describe" ;
- noisily describe ;
- di _n(2) ; set more 0 ; more ; set more 1 ;
-
- di _n(2) in wh _dup(79) "-" _n in ye
- "sysage.dta" in gr " is the same as " in ye "systolic.dta" in gr
- " except that it contains a fourth var-" _n
- "iable, age. When we wrote the ANOVA tutorial, we needed a continuous variable"
- _n
- "to illustrate analysis of covariance. The variable is not real data." _n
- in wh _dup(79) "-" _n(3)
- ". use %path`sysage, clear" ;
- noisily use %path`sysage, clear ;
- di _n in wh ". describe" ;
- noisily describe ;
- di _n(2) ; set more 0 ; more ; set more 1 ;
-
- drop _all ;
- label drop _all ;
- macro define F6 "do %path`yourdata.tut;";
-
- di _n(4) in white
- "Demonstration ends" _n
- "------------------" _n ;
-
-
- di in green
- "That concludes our short demonstration, but there's much more. We now return"
- _n
- "control to you. Some suggestions:" _n ;
-
- di in green
- "If you ..." _col(34) "Then we will show you ..." _n
- " Press " in white "F5" in green _col(38) "a table of tutorial contents" _n
- " Press " in white "F6" in green _col(38) "the next tutorial, "
- in white "yourdata.tut" _n ;
-
- run %path`tobuy.tut ;