Application Assignment

W A L D E N U N I V E R S I T Y

P U B H 6 0 3 2 / 8 0 3 2

S P S S R E V E A L E D

P U B H 6 0 3 3 / 8 0 3 3

I N T E R P R E T A T I O N & A P P O F D A T A

Data Dictionary vs. Codebook

DATA DICTIONARY

 Is used to show dictionary information for the current working file

 Is considered to be a simplified codebook

 Contains less information than the codebook

DATA DICTIONARY

 DICTIONARY INFORMATION :  All information on variables

 Variable names

 Variable labels – what it represents or what it measures

 Measurement scale for variable- nominal, ordinal ,etc.

 Missing values  How variable originally recorded/reported including if numbers or

strings, how many characters if a string variable or how many decimals if numeric)

 For continuous or scale data variables: measurement units (inches, feet, mL, lbs, etc.)

 For string or categorical variables: If coded with numbers (not letters), what the numbers mean per representing the underlying categorical variable like 1=male

DATA DICTIONARY STEPS

 Click on File > Display Data File Information > Working File.

 The codebook will print to the Output Viewer window.

 All information will be contained in a single aggregate table

DATA DICTIONARY EXAMPLE

CODEBOOK

 Provides all information you need on a variable in a single table

 Contains all the data dictionary information and descriptive statistical information

 Combines Display for dictionary information, the Frequency command for categorical variables, and the Descriptives command for scale variables.

CODEBOOK

 CODEBOOK INFORMATION:

 All display dictionary information

 Descriptive statistical information

 Each variable is shown in a separate table

 Categorical variables will include counts and percentages

 Scale variables will include summary statistics

CODEBOOK STEPS

 Click on Analyze > Reports > Codebook.  In Variables tab: Add the variables you want to include. If you

want to include all variables, click inside the Variables box, then press Ctrl + A, and then click arrow button. Then click OK to run and display your codebook.

 If you want to customize your codebook, which is optional, you can click on the following tabs:  Output tab: You can choose the variable and datafile properties want

 Variable display order: If you want to change the order of your variables in the data file, you can change to make them alphabetical or by measurement level, etc..

 Statistics tab: You can choose the statistics you wan. If no changes are made, the default setting includes, counts and percentages for nominal and ordinal variables; and mean and standard deviation for scale variables.

 When finished, click OK.

CODEBOOK EXAMPLE

REFERENCES

 Horber, E. (2016). Codebook. Retrieved from http://www.unige.ch/ses/sococ/cl///spss/cmd/codebook.ht ml?

 Horber, E. (2016). Display dictionary. Retrieved from http://www.unige.ch/ses/sococ/cl//spss/cmd/display.html

 Kent State University. (2014). Creating a Codebook - SPSS Tutorials. Retrieved from http://libguides.library.kent.edu/SPSS/Codebooks

 UCLA: Statistical Consulting Group. (2016). SPSS learning module. Retrieved from http://www.ats.ucla.edu/stat/spss/modules/labels.htm