Importing rules

Ungrouped data
-No white spaces (use _ instead if you need to separate words)
-Avoid non standard characters (for example, asterisks, or accents like you use in spanish or french)
-No commas or points for values: use the plain number
-If missing values, write the type of the variables (Category or Numeric)
-You can use missing values in category variables, but I do not know of a good reason for doing that
-First column labels? Then, indicate the type of first column is labels and name of first column will be used as name for the data

Grouped data
Table data: Do not try to use table data directly, codify it as frequency category data
Frequency category data are one or several category variables and one numeric variable with name Freq or Frequency

