Social Science Research Design and Statistics, 2/e Alfred P. Rovai, Jason D. Baker, and Michael K. Ponton Recoding Variables PowerPoint Prepared by Alfred.

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Social Science Research Design and Statistics, 2/e Alfred P. Rovai, Jason D. Baker, and Michael K. Ponton Recoding Variables PowerPoint Prepared by Alfred P. Rovai Presentation © 2013 by Alfred P. Rovai, Jason D. Baker, and Michael K. Ponton IBM® SPSS® Screen Prints Courtesy of International Business Machines Corporation, © International Business Machines Corporation.

Recoding Variables Copyright 2013 by Alfred P. Rovai, Jason D. Baker, and Michael K. Ponton Recode into Same Variables allows one to reassign the values of existing variables or collapse ranges of existing values into new values by changing an existing variable. For example, one can collapse scale data into low, medium, and high categories. Recode into Different Variables allows one to reassign the values of existing variables or collapse ranges of existing values into new values for a new variable. Automatic Recode allows one to convert values into consecutive integers.

Copyright 2013 by Alfred P. Rovai, Jason D. Baker, and Michael K. Ponton Open the dataset Motivation.sav. TASK Recode gpa into a different variable by collapsing existing data using the following ranges: 3.67 to 4.00 = A 2.67 to 3.66 = B 2.00 to 2.66 = C Below 2.00 = F File available at

Copyright 2013 by Alfred P. Rovai, Jason D. Baker, and Michael K. Ponton Follow the menu as indicated.

Copyright 2013 by Alfred P. Rovai, Jason D. Baker, and Michael K. Ponton In this example, GPA (gpa) is the input variable. Start by highlighting GPA(gpa) and then clicking the right arrow icon to move the variable to the Input Variable - > Output Variable: box.

Copyright 2013 by Alfred P. Rovai, Jason D. Baker, and Michael K. Ponton Next enter a Name and Label for the Output Variable. Then click the Change icon.

Copyright 2013 by Alfred P. Rovai, Jason D. Baker, and Michael K. Ponton Next, click the Old and New Values… icon.

Copyright 2013 by Alfred P. Rovai, Jason D. Baker, and Michael K. Ponton Next, click on the Range radio button, enter the range for the first category, select Output variables are Strings, then enter the Value for the first category. Click Add. Repeat this process for the next two categories. For the final category, use the Range, Lowest through value radio button.

Copyright 2013 by Alfred P. Rovai, Jason D. Baker, and Michael K. Ponton After entering all categories click the Continue button then the OK button.

Copyright 2013 by Alfred P. Rovai, Jason D. Baker, and Michael K. Ponton The result will be addition of a new string variable named gpa_cat. If numeric instead of string output is desired one can specify numerical output values as numbers, e.g., 1, 2, 3, and 4. One can then go to Variable View and use the Values field to identify value labels, i.e., 1 = A, 2 = B, 3 = C, and 4 = F.

End of Presentation Copyright 2013 by Alfred P. Rovai, Jason D. Baker, and Michael K. Ponton