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Extra info for Brief Guide To Stata Commands
3 Creating a dataset from an ASCII file . clear . raw . raw . list The infile command is used to read data from an external ascci file. The names of the variables are given followed by the keyword using which in turn is followed by the name of the file. str10 is not a variable name but indicates that name is a string variable up to 10 characters long. 4 Creating a dataset from a spreadsheet or database . clear . raw . raw . list The insheet command is used to read data from a file created by a spreadsheet or database program.
Order . rename . label data . label variable . label define . label values . replace . recode . note: . notes . dta, it looks like this: id 1 2 3 4 5 6 7 8 9 10 a1 25 23 17 19 21 24 16 21 19 18 t1 48 46 40 40 41 47 35 43 39 38 gender 1 2 1 1 2 2 2 1 2 1 a2 24 21 21 19 24 22 19 23 20 20 t2 tgender 95 1 94 1 84 1 87 0 83 0 96 0 76 0 82 1 78 1 80 1 . cd A:\statacls . use schdat, clear . describe The describe tells us the names of the variables but doesn't provide much more information. Here's the scoop on the data: a1 and a2 are scores on two assignments, t1 and t2 are the scores on the midterm and final respectively, and for gender, 1's are males and 2's are females.
Recode tgender 0=1 1=0 . label define sex 1 "male" 0 "female" . label values gender sex . label values tgender sex . describe . tab1 gender tgender . tab1 gender tgender, nolabel The recode command allows us to code both gender and tgender the same way. The label define command creates a definition for the values 0 and 1 called sex. The label values command connects the values defined for sex with the values in gender and tgender. 4 Make a note of this . note: gender is self-report . note: the final was a take-home exam .