Interfaces of SPSS:
More than one way exists for you to command SPSS to do your
bidding. And you don’t have to choose one and stick with it — you can perform
tasks using whichever of the four interfaces you prefer. You can use any of the
four approaches to perform any of the SPSS functions, but which one is best for
you depend, to an extent, on the task to be performed and which interface you
prefer.
GUI (graphic user interface): SPSS has a
windowing interface and commands can be issued by the mouse through menu
selections that cause dialog boxes to appear. This is a fill-in-the-blanks
approach to statistical analysis that guides you through the process of making
choices and selecting values. The advantage of the GUI approach is that, at
each step, SPSS will make sure that you enter everything necessary before
proceeding to the next step. This is the preferred interface for those just
starting out — and if you don’t do much with SPSS, this may be the only
interface you ever use.
Syntax: This is the internal language used to
command actions from SPSS. It was known as the command syntax of SPSS, hence
its name. It is often referred to as the command language. You can write Syntax
a command to directly command SPSS to do anything it is capable of doing. In
fact, when you use menu and dialog box selections to command SPSS, you are
actually generating Syntax commands internally that do your bidding. That is,
the GUI is nothing more than the front end of a Syntax command-writing utility.
Writing (and saving) command language programs are a good way to store
processes that you expect to repeat. You can even grab a copy of the Syntax
commands generated by the GUI and save them to be repeated later.
Python: This is a general-purpose language
that has a collection of SPSS modules written for it, making it possible to
write programs that work inside SPSS. It can be run with the Syntax language to
command SPSS to perform statistical functions. One advantage of using Python is
the fact that it is a modern language and gives you the power and convenience
that come with languages today, including the ability to construct a more
readable program. In addition, because it’s a general-purpose language, you can
read and write data from other applications and from other files.
Scripts: The items that SPSS calls scripts are
actually programs written in BASIC. This language is simple and many people are
familiar with it. Also, a BASIC program can be written as an autoscript —
a script that executes automatically when SPSS produces certain output.
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