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Four influencing factors of hydrocarbon critical temperature, experiment temperature, pressure and hydrocarbon/water density difference were considered as independent correlating variables to design and develop the correlation.
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We used two methods: either the values were compared as such, or the BAU option was first subtracted to correlate variables to incremental values (Additional file 4).
13 16 This is not a problem specific to triage; simple scores often outperform expert intuition when there are many (possibly irrelevant) correlated variables to consider, and when the intuition deals with the prediction of future events.
It is similar to factor analysis, in that it identifies synthetic variables (or latent dimensions) underlying observed variables, but does so by producing maximally correlated variables across to sets of variables.
Adolescents completed questionnaires in the classroom to identify the BRFCH and correlate variables to be analyzed in the study.
We found that, if we removed correlated variables prior to model selection, the final models were artefacts of the variables we had selected.
However, this approach results in larger data processing demands as well as less sensitive analyses, especially if highly correlated variables "compete" to explain the same unique variance.
Spearman's coefficient of rank correlation was used to correlate variables.
That analysis can be simple — like a linear model used to correlate variables — but increasingly it's becoming very complex.
Pearson analysis was used to correlate variables.
Since modules group together highly correlated variables, it is advantageous to summarize the variable profiles using a single representative.
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