How to write a numeric expression in spss

You can either read or watch this tutorial. This tutorial assumes that you have: There are two common techniques used to accomplish this goal -- recode and compute.

How to write a numeric expression in spss

The data set called https: Here are links for the online movies presenting the material in this seminar. The aim of this seminar is to help you learn about the use of SPSS syntax as an alternative to the point-and-click interface.

In many instances, you may find that using syntax is simpler and more convenient than using point-and-click. The use of syntax is also helpful in documenting your analysis. It is difficult to take adequate notes on modifications made to the data and the procedures used to do the analyses when using point-and-click.

All SPSS procedures and functions are executed using syntax code, whether you use the point-and-click interface or write your own syntax. Almost everything that you can do in SPSS via point-and-click can be accomplished by writing syntax. There are a few exceptions, most notably when using the igraph command.

Also, there are a handful of commands that are available via syntax that are not available via the point-and-click interface, such as temporary and manova. There are several ways in which you can get SPSS to show you the syntax that it is using to run your analyses, and they are explained below.

Perhaps the simplest way to ease yourself into writing SPSS syntax is to click on the Paste button instead of the OK button after you have set up your analysis. This will paste the code that SPSS uses to run your analysis into a syntax window.

A syntax file is nothing more than a text file; hence, you can type code and comments into it, and you can cut-and-paste in it as you would in any text editor. To run the code that you have pasted, you simply highlight it and click on the right-pointing arrow at the top.

Your results will be displayed in the output window just the same as if you had used the point-and-click interface. Another simple thing that you can do to help you learn SPSS syntax is to make a change in the general SPSS options that will show the code being used immediately before the output in the output window.

To make this change, from the Data Editor window, click on Edit, then on Options, and then on the View tab. The journal is a log of all of the SPSS commands that have been issued, but with no output. You can change that location, and you can indicate whether the journal should be overwritten every time you start SPSS, or if your next session should be appended to the bottom of the existing file.

You can view the journal file using a text editor such as WordPad. Be aware that the file might be quite long, so NotePad may not be able to open the file. One of the most important things to remember when writing SPSS syntax is that all commands must end in a period.

This includes comments, which you can use pretty much anywhere in your syntax file. Creating numeric variables Perhaps the first thing that you need to know when using SPSS syntax is how to open a data file. The SPSS command for this is get file followed by the path where the file is located.

The path and file name must be enclosed in quotes, and you need to include the file extension, which is. Two commands that you can use to create numeric variables are compute and if.

SPSS will not create the new variables unless we issue either the execute command or a procedural command whether or not the procedure involves the newly created variable. In the syntax below, the execute is technically unnecessary because we issue the procedural command list immediately afterward.

However, including the execute does not cause any problems, and it is handy to have in case you later change the program and remove the command that executes the compute commands.

Number of cases read: As shown in the following code, the execute command can be shortened to exe. Note that a label was automatically created for the new variables. We also see that the command descriptives is another command that can be shortened to desc.

Short string variables have a maximum length of eight characters. Long string variables have a maximum length of characters. However, long string variables cannot be used in tabulation procedures and they cannot have user-defined missing values see below.

This means that long string variables cannot have missing values, as user-defined missing is the only kind of missing values a string variable can have.SPSS AND operator combines two logical expressions. It returns “true” if both of its arguments are true.

how to write a numeric expression in spss

It returns “true” if both of its arguments are true. The schedule below shows its outcomes when one or both of its arguments are unknown.

Enter the rest of the equation. Click the + button (or press the + key on the keyboard). Click on the parentheses button (or press the left parenthesis key on the keyboard). Click on 6, and -. Move the Talk variable into the Numeric Expression text box.

Continue until you have entered the entired expression into the Numeric Expression text box. Written and illustrated tutorials for the statistical software SPSS. Compare Means is best used when you want to compare several numeric variables with respect to one or more categorical variables.

It is especially useful for summarizing numeric variables simultaneously across categories. Click on the "multiplication" sign (x), and it will move to the "Numeric Expression" box following the variable.

Step Find the name of the next variable in the list of all your variables that you wish to multiply by your first variable, and then click on it.

Introduction to SPSS Syntax 1. NOTE: This seminar was created using SPSS version Perhaps the simplest way to ease yourself into writing SPSS syntax is to notice the syntax that SPSS includes above the results in your output file.

In other words, SPSS prints the syntax of each procedure immediately above the results. The numeric. As a member, you'll also get unlimited access to over 75, lessons in math, English, science, history, and more.

Plus, get practice tests, quizzes, and personalized coaching to help you succeed.

Beyond Point and Click: SPSS Syntax