how to upload data on spss ucla
Data stored in text files take extensions such as*.txt,*.dat, or*.csv. These types of data files are simple to create and are non tied to a proprietary software, so they are a popular selection for data files. While many computers will automatically open these file types in a spreadsheet software like Microsoft Excel, they can be opened and edited using whatsoever text editor program.
Importing text files into SPSS is slightly different than importing data in Excel spreadsheets. At that place are several unlike patterns used to delineate the start and end of a particular variable, and SPSS must know what pattern to follow in order to read the data correctly.
In general, in that location are two patterns that SPSS recognizes:
Delimited data: Each ascertainment is delimited, or separated, by a particular character. Common characters used for delimiters include commas, tabs, and whitespace.
ID,Age,Gender A001,41,F A009,36,M C321,27,F Stock-still-width data: Rather than using delimiters between observations, the values of the variables are aligned vertically, so that a given variable e'er begins in a certain column position. In the below example, ID ever begins in column 1; Age always begins in column ten; and Gender e'er begins in column 16.
ID Historic period Gender A001R 41 F Z009 36 M C321BC 27 F Files with the extension *.txt are called text files. This file type can comprise fixed-width or delimited data. A common variation for *.txt files is tab-delimited information; that is, each ascertainment is separated by a tab (created using the Tab key on the keyboard). Nonetheless, *.txt files practise not e'er use tabs equally delimiters -- in fact, *.txt files can use any grapheme as a delimiter, including commas.
Files with the extension *.csv are chosencomma-delimited files; in this type of file, the observations are delimited by a comma. Traditionally, the first row of a CSV file contains the variable names (separated by a comma), and the start row of data begins on the second line. Missing values are denoted using adjacent delimiters.
The process for importing whatsoever of these file types is virtually identical in SPSS, so here, we volition demonstrate using merely a CSV file.
Importing a CSV File (SPSS 23 and later)
To import a CSV data file into SPSS, brainstorm by clicking File > Open > Data. In the Open Data window, change Files of type to "CSV (*.csv)". Locate your file and click on it to select it, and then click OK. This will start the Text Import Wizard procedure, which will walk you through the procedure of specifying how SPSS should read and interpret the information file.
Step 1 of 6
This window provides a preview of the data in your text file. The first step is to indicate whether the data matches a predefined format, which would be a format saved from a previous text file imported with the Text Import Wizard. (This would exist the case if you had already imported a text data file into SPSS in the past that was formatted exactly the same way, and had called to salvage the import format during the last step of the Text Import Wizard.) In most cases in that location will not be a predefined format.
If your data matches a predefined format, clickYes and then scan for and upload the file that defines the format.
If your data do not match a predefined format, clickNo, then clickNext.
Footstep two of vi
If your data did not lucifer a predefined format you will need to tell SPSS how your data is bundled, so that it understands where one column ends and the next begins. For text files, in that location are two types of "arrangements": delimited and stock-still width. If you are importing a CSV file, y'all have delimited information. Y'all will also need to tell SPSS if the datafile contains variable names. For CSV files, variable names are typically included on the kickoff line of the data file, before the data begins; notwithstanding, some datafiles do non include variable names.
In the "How are your variables bundled" area, click the radio push button that matches your information'due south format:
- Delimited: Variable values are delimited (or separated) in the file by a special graphic symbol, such as a comma or a tab.
- Fixed width: Variables are aligned in fixed width columns.
In the "Are variable names included at the top of your file" surface area, clickYeah orNo.
If necessary, choose the symbol used to denote decimals. Then clickNext.
Footstep 3 of 6
We at present demand to tell SPSS what row our data begins on, and how many rows should be read. For CSV files, the first row typically contains the variable names, and the data values begin on line 2. However, you can cull to skip over certain lines if necessary. (One example where this occurs is in Qualtrics survey data output to CSV: The 2nd row often contains variable labels, and oft at that place may be a 3rd row containing import IDs, and the data actually begins on line four.) Lastly, if you only want to import a pick of cases -- for example, the first 1000 cases, or a random sample of 10% of the cases -- you can opt to exercise so on this screen.
ClickAdjacent when you are finished.
Footstep 4 of half-dozen
In the "Which delimiters announced between variables" surface area, select the check box that reflects the delimiter used in your data. The delimiter is what is used to separate values from each other within the data. The options include Tab, Space, Comma, Semicolon, Other. If the text file is a .csv file, then the delimiter is a comma. If you do not know which delimiter is used in the text file, refer to documentation that is associated with your data or ask someone who knows how the data file was created.
The options Remove leading spaces from string values and Removing trailing spaces from cord values were added in SPSS version 25. If you are using SPSS version 24 or before, you lot will not see these options on this window.
SPSS attempts to guess what delimiters your file is using. For example, when using the import wizard to import the sample data in *.csv format, SPSS guesses that both commas and spaces were used as delimiters. Notice how that affects the parsing of variable Major:
Because SPSS thinks that both spaces and commas were used as delimiters, it thinks that the spaces occurring in the names of the majors delimit observations for subsequent variables, and hence, SPSS interprets individual words as readings for the adjacent variable(s) (here, variables Height, Weight, and Smoking). Immigration the bank check box next toSpace will correct this, and the change will be reflected in the preview.
Notice, all the same, that in that location was still at least one case where the observation for Major was incorrectly split across ii columns. Notice how the value has double quotes (") before the offset discussion and later on the terminal word. These quotes are being used as the text qualifiers; that is, they point where the observation starts and ends. To correct this, we demand to change the text qualifier option to Double quote.
ClickAdjacent when you are finished.
Step five of six
This step allows you to specify the format for each variable in the data file. In the "Specifications for variable(s) selected in the information preview" area, SPSS explains what criteria it uses to "guess" what format to use. In SPSS versions 24 and earlier, the default format called for a given variable is based on the values present in the start 200 records. In SPSS version 25, the default format chosen is based on 95% of the cases.
In the Information Preview expanse, SPSS displays a preview of how your information will appear in SPSS in one case the import is complete. You lot tin can select any of the variable names (columns) in order to change the variable name or change its format. For example, in the example above we have selected the variable bday in the Data Preview area. This variable proper name now appears in the Variable name expanse above, and the Data format is likewise displayed—which, in this instance, is Date/Time. You can change the format of the variable past selecting a unlike format from the drop down menu; here, we take selected mm/dd/yyyy to match the formatting of the observations in this column. It is important to check every variable to make sure the format and length is right, rather than relying on SPSS to correctly identify the variable formats; this ensures that you control exactly how each variable was read.
Step vi of 6
In the terminal pace, you can choose to save the file format that you simply defined for the current data file in case you will import data with the same structure and format in the future. You lot can also cull to save the syntax, which is SPSS'due south text-based control language. Saving the syntax would allow you to format future data files in the same way without having to manually select each of the options in the Import Wizard again.
A preview of your data appears at the lesser of the dialog box. If you are satisfied with the way the preview looks, click Finish to finalize the import. Now your information should appear in SPSS in Data View window. It is a skilful thought to salvage your newly imported data every bit an SPSS file (extension ".sav") then that you can easily open the file in SPSS in the future.
Shortcut for Importing CSV Files (SPSS 25)
In any version of SPSS, you lot can open a text or CSV file by using File > Open > Data. Prior to SPSS version 25, y'all could alternatively use File > Read Text Data to brainstorm importing a text or CSV file; this functioned identically to File > Open Data. In SPSS version 25, Read Text Data has been removed from the File card, and replaced with the File > Import Information submenu.
Clicking File > Import Data > CSV will open the Read CSV File window:
This prompt attempts to simplify the import procedure, then certain actions (like renaming variables earlier importing, or manually specifying variable formats) are removed from this screen. If you need this level of command, you tin click the Advanced Options button; this will open up the Text Import Wizard (described in the previous section).
Source: https://libguides.library.kent.edu/spss/importdata
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