Modify the existing observations

• 1 Choose the variable you wish to modify
• 2 Select the type of modifications you want to perform on the observations of the variable selected : empty responses (each observation will have for value a non-response on the variable chosen, here Picture Selection), aleatory responses (each observation will have a new value for the variable chosen, selected randomly by Sphinx iQ).
• 3 It is possible to define percentages for each modality.