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Merjah,

ANOVA is something you'll need to run in your general purpose stat testing software (SAS, SPSS, etc.).

ANOVA is something you'll need to run in your general purpose stat testing software (SAS, SPSS, etc.).

How do I make the different respondents utilities to be on the same scale. To make them to be of same length?

You can use the ZCD transformed utilities instead of the raw utilities.

If you need to do this calculation, it is described here: https://sawtoothsoftware.com/forum/6140/is-there-a-formula-for-calculating-the-zero-centered-diffs

If you need to do this calculation, it is described here: https://sawtoothsoftware.com/forum/6140/is-there-a-formula-for-calculating-the-zero-centered-diffs

Thank you! I am doing the two way analysis for a scientific journal article. I always before used covariates for one way analysis. In your forum that is suggested. How "correct" is it to use traditional statistics for this?

Oh, if you're using the analysis for a journal article, I would think you would want avoid traditional frequentest statistics, if that's what you've done in the past. I'm not clear, though, on how you ran the analysis before with covariates.

I have used covariates to do ANOVA, one-way analysis of variance following the technical paper of Sawtooth by Orme and Howell. The problem is that I have two categorical variables gender and university and I need to check also if there are significant interaction effects of gender and university. Absolutely routine in traditional statistics but not here . I wrote your support and they advised me to put a question here and possibly call Kenneth.

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