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how does the calculation work?


I have a question about the cbc calculation. What happens if I delete completes and run the calculation? Is it less accurate because of the data loss? Or is it better to keep completers, who obviously did not well consider their response because their response will be smoothed by the majority of 'good' completers?

Thanks a lot!
asked Sep 26, 2017 by anonymous

1 Answer

0 votes
This is a difficult question to answer.  If a respondent has been identified as "bad" due to some consistency checks or other information available, then one wonders whether to delete them from CBC estimation.  Usually, CBC researchers clean & delete from 5% to 20% of their respondents as "bad".  This tends to clean up the utilities and make analysis such as optimization or WTP (willingness to pay) calculations better.
answered Sep 26, 2017 by Bryan Orme Platinum Sawtooth Software, Inc. (148,340 points)