STATA 11 for Windows SAMPLE SESSION - Food Security Group ...

Stata 11 Sample Session Section 1 - Basic functions: Files, Descriptives, Data Transformations
were tabulated. Why?
The tab1 command The Stata commands are:
The histogram command The Stata command is:
1. Go back to the dialog box, Tab1 - One-way Tables.
2. There is an option “Treat missing values like
other values”. Place a tick mark ✓ on this option.
3. Copy the command, switch to the do-file, copy the
command, return to the dialog box.
4. Click on Ok
Looking at the table for ca4 – there are 16 cases that are
missing values. Stata’s default is to not show the missing
values.
tab1 ca1 ca2 ca4 ca5 ca6
tab1 ca1 ca2 ca4 ca5 ca6, missing
Note: to produce a tabulation (frequency) of just one
variable, you can use the tabulate command. However, if
you want to list several variables in the frequency
command, you must use the tab1 command. Below, you
will see that if you use the tabulate command and list 2
variables, a cross-tabulation is produced.
Another useful way to examine a continuous variable is
to Graph the variable to view the distribution of the
values.
1. From the menus select Graphics, Histogram
2. Click on the drop-down area for the Variables
box and select ca3.
3. Tick the box ✓ for Width of bins and type in 5
in the box next to this option. The ages will be
grouped into 5 year ranges.
4. For the Y-axis click on the radio button next to
“Frequency” so we will see the number of cases in
the age groups.
5. Click the copy icon and then click on Ok to run
the command.
histogram ca3, width(5) frequency
See a copy of the graph below.
Saving a graph to a file If you want to save this graph to a word processing
document, you can on the graph, select
“copy graph”, then switch to your word processor and
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