Comparison of 3 categories/conditions
Posted: Mon Dec 11, 2017 12:51 pm
Hello everyone,
I´m in the act of conducting the analysis for my master thesis with smartPLS and I´m facing the following problem:
I collected data via performing an experiment with 96 subjects and randomly assigned them into 3 groups. Each group has the identical number of observations. The model is attached. Now I intend to compare the investigated condition (vinyl record) with 2 controlled conditions (CD & MP3). Is it possible to compare the investigated condition (vinyl record) with one control category by means of including a categorical predictor variable (the 1st exogenous IV) as a dummy coded variable? Therefore, I will include the data of i=32 accounting for the observations of the vinyl record condition (coded as 1) and the data of i=32 observations accounting for the observations of the CD condition (coded as 0 as the reference category). The same comparison will be applied for the MP3 condition (Vinyl=1, MP3=0).
Is that a suitable approach or do I have to conduct a multigroup analysis?
Kind regards,
Benjamin Beiersdorf
I´m in the act of conducting the analysis for my master thesis with smartPLS and I´m facing the following problem:
I collected data via performing an experiment with 96 subjects and randomly assigned them into 3 groups. Each group has the identical number of observations. The model is attached. Now I intend to compare the investigated condition (vinyl record) with 2 controlled conditions (CD & MP3). Is it possible to compare the investigated condition (vinyl record) with one control category by means of including a categorical predictor variable (the 1st exogenous IV) as a dummy coded variable? Therefore, I will include the data of i=32 accounting for the observations of the vinyl record condition (coded as 1) and the data of i=32 observations accounting for the observations of the CD condition (coded as 0 as the reference category). The same comparison will be applied for the MP3 condition (Vinyl=1, MP3=0).
Is that a suitable approach or do I have to conduct a multigroup analysis?
Kind regards,
Benjamin Beiersdorf