C Appendix Variable Types

jamovi classifies data variables in four classes:

  • Nominal : categorical factor, it is passed to the R engine as a factor. Its behavior in jamovi interface depends on the Data Type property. We have

    • Data Type: integer can be inserted in the input field that permits numerical variable and nominal variables
    • Data Type: text can be inserted in the input field that permits nominal variables
    • Data Type: decimal it does not exist. Setting Data Type to decimal makes the variable a continuous type

  • Continuous : numerical variable, it is passed to the R engine as a number. It can be input in the variable field that permits numerical variable. The data type property behaves like this:

    • Data Type: integer rounds the values to the closer integer
    • Data Type: decimal allows for floating points
    • Data Type: text does not exist, setting Data Type to text transforms the variable into a nominal variable

  • Ordinal : numerical variable, it is passed to the R engine as an ordered factor. It can be input in the variable field that permits numerical and ordinal variables variable. The data type property behaves like this:

    • Data Type: integer can be inserted in the input field that permits numerical variable and nominal variables
    • Data Type: text can be inserted in the input field that permits nominal variables
    • Data Type: decimal does not exist. Setting Data Type to decimal makes the variable a continuous type

  • ID : something cool which I do not know about.