Variable names should include ordinary letters, numbers, and underscores (e.g., Gender, Grad_Date, Test_1) and not include special characters (e.g., ' Graduation Date' would not be a valid variable name because it contains a space).The spreadsheet should have a single row of variable names across the top of the spreadsheet in the first row.To import data from an Excel spreadsheet into SPSS, first make sure your Excel spreadsheet is formatted according to these criteria: