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Total LL across respondents?


The conversion of RLH to LL is not clear to me. Especially the step B. How do we get the total LL across respondents from the individual LL? Could you explain that with a formula?

Based on the total LL, I can then apply the following formula to get the total Pct certainty of my model? Pct Certainty=(LL final model- LL Chance model)/(-LL of the Chance model). So if I get a total LL of 0.69, I will have a Pct Certainty of (0.69-(-10))/(-10)=0.66.

Thank you
asked Feb 18, 2016 by anonymous

1 Answer

0 votes
To convert individual respondent LL to total LL just sum across respondents:  so if you have 5 respondents it's LL1 + LL2 + LL3 + LL4 + LL5.
answered Feb 18, 2016 by Keith Chrzan Platinum Sawtooth Software, Inc. (85,200 points)