Dear Sawtooth professionals,
For my survey, the total number of parameters to be estimated is 9 (=13 – 5 + 1).
Based on the min # of tasks ranged between 1.5 and 2 times the parameters to estimate, I built 15 CVA scenarios.
I already soft-launched the survey using the customer panel.
Is there a way to measure the validity without holdout tasks?? Or, can I holdout one task among 15 and measure the validity similar to CBC tasks as shown below?
If there is a way without increasing the total number of scenarios, please let me know.
Or, if there isn't a way, should I include 1 or 2 additional holdout sets for the actual launch of the survey?
Thank you for the answers.