Create your own data file, enter it into SPSS, and save the file. Run various statistical analyses on the data. Use this data file for answering examples in later portions of the text. You might want to create some categorical variables (e. g., gender) and some physiological and cognitive variables. You might also include two or more trials of the same test (e. g., three measures of percent fat obtained by three testers). Some older versions of SPSS limit the number of characters in the variable name to 8. Additionally, special characters are not permitted in the variable name (e. g., space,